*Robert Bruce Thompson* “ *TheHomeScientist* ” . June 6, 1953 - Jan. 20, 2018. For those who doesn’t know the guy had been struggling for the last couple of years and he is finally at rest since January of this year after heart complications. I rarely get serious on this website but I just felt I had to write this comment. TheHomeScientist thank you so much for your effort on promoting amateur chemistry. It goes without a saying that you were part of the motivation for me towards improving and keeping on with this hobby when I was a kid. Your videos were awesome and some even crazy dangerous but that only fed to the curiosity of those watching, and for some of us it opened a world to new kind of reactions and chemistry to learn about! The ride was short but fuck it was awesome! at least it was on the eyes of a 15 years old who was curious as hell but just needed a push to really get into science and for that I’ll be always thankful. I’ll always treasure the amateur chemistry community of 2010-2014 on my heart, it really changed my life. Before I get too emotional I just wanted to say, a community doesn't forget, thank you for your enthusiasm and service! May you rest in peace mister Robert Bruce Thompson, TheHomeScientist, what a nice ride it was.

@illumiNOTme326

5 жыл бұрын

RIP Robert Bruce Thompson

Its quite late, but I just heard that Robert Bruce Thompson passed away nearly a year ago and im shattered. This man was an absolute treasure within the community, and his books inspired so many to pursue chemistry, computer and other sciences. You are a legend sir, and I appreciate everything you taught us.

Robert Bruce Thompson, one of the greatest youtube chemist´s I´ve ever seen, passed away on January 20th 2018 in the rehab clinic.I have to say many thanks for what he did to promote my channel and others. He was a pretty smart guy and I enjoyed writing to him back in 2010/11. Rest in Peace, Bob.

@commentatron

6 жыл бұрын

Sorry to hear he fell off the wagon, and yes, he was kind of smart. RIP Bob, RIP.

@ryanmcmahon971

5 жыл бұрын

Damn he passed away very sad indeed. I believe I have his book all lab no lecture and I love it. Did he pass from H or fentanyl? A lot of US people are falling foul of fentanyl. Anyway very sad. 😔

@spiderjuice9874

5 жыл бұрын

Very sorry to hear this, but nevertheless I'm grateful to find out about it: thank you, and many thanks also to Robert.

@akhsarbekgetoev7725

5 жыл бұрын

Reast in peace ( I was glad to watch his videos and listen to his lectures.

@WaffleStaffel

3 жыл бұрын

@@commentatron Winston Salem nursing and rehab does not explicitly appear to be a drug rehab facility.

I'm an amateur chemist and I found this video helpful. Decent presentation skills too, even with a low volume.

Thanks for the professional presentation! It's the simple things like titrating acid that I've forgotten over the years. Great refresher.

Excellent video! I have a new favorite channel. Thank you Robert for posting these!

Great video!

Great video! thanks for sharing!

You are basically bob ross of chemistry. "Happy little trees"

I really enjoy your video. Its very though rough and helped me understand purity through simple math.

That was a heart pounding moment. 3:26

@kalte333

8 жыл бұрын

Hahaha I went back to rewatch. yeah it was jump worthy

Very informative. I work in a chemical plant using 66* acid (93%) although we never (hopefully) actually see the stuff, it is in the lines. We also use a lot of Oleum, that is nasty stuff.

@TheHomeScientist Thanks for the tip. I bought the acid with confidence, after wondering for a few years of its purity. Question: I need ammonium hydroxide without the surfactant mixed in it, as found in cleaning ammonia. Do you know where it is available, or how to get the soap out of it?? Or maybe the soap doesn't hurt? Trying to ammoniate nickle sulfate and lower its pH.

@OAbrey H2SO4 is made commercially by burning sulfur to produce SO2 gas, which is then oxidised with oxygen to SO3, wich is then dissolved in water.

Excellent.

@TheHomeScientist Thanks again. Am on my way to the greenhouse. Might have a question in the near future on separating chromic acid from sodium sulfate.

I love this stuff

i think they some times add black dye to acid to see spills and leaks easyer ?

Can you do a video on the effects of this product on galvanized steel pipes? Will sulfuric acid destroy plumbing? Thanks

Do you think a laundry detergent bottle if thoroughly cleaned and labeled clearly would work? I think you are right about using several different bottles. One of the reasons I wanted to concentrate it was just to reduce the shear amount of volume it takes up. Also, I had to ask at the counter if they had the larger size of battery acid. They did, but they keep it in the back warehouse area. It was much cheaper than the quart size.

when i left school in 1967, i went to work in a public analysts. one of the tests performed every day was about 6-700 individual kjeldahl method for protein determination. a specimen of ground dry foodstuff + a kjeltab (mercury based) + conc' H2SO4, which was pippetted up using the mouth! and it was not a safty pipette with a bulb! often someone would rush to the sink with a warming mouth! or a kjeltab would have cracked the kjeldahl flask and the sulphuric asid wou;ld first be noticed by a earm sensation usually the sock! there were small balls of metallic mercury aways prescent in the sinks and the digerster unit pumped the gas and mercury straight into the air of the city of london. gloves? they can cause accident through clumsiness.

You mentioned the price for other sources of sulfuric climbing dramatically over time so I'm curious as to the long-term storage characteristics of sulfuric? If I were to purchase a large amount of the Rooto for instance now, in order to hedge against further price increases, what is a realistic expectation regarding it's life expectency in an unopened container?

@TheHomeScientist Thanks again. Will watch for no foam. To make saturated ammonium sulfate, I pour ammonia hydroxide into sulfuric acid, slowly, until pH neutral, then evaporate till get crystals, then mix into water until saturated? ... then pour about twice the volumeof ammonia sulfate solution to saturated nickel sulfate solution, mix together and evaporate until get blue green crystals?

So, what would you do to make this experement work? (what kind of electrodes should I use that can sustain such oxydizing conditions and not erode?) Thanks for your help.

Is there any way to purify/concentrate the acid more (kind of like what you did with the hydrochloric acid)?

i have just discovered that when I poured 1/2 of this stuff into our clogged kitchen floor trap (i pumped out the water first), It ATE thro the upvc floor traps and left a hole thro to the apartment unit below ours !!! Now we need to see him to sort this out😱

@TheHomeScientist Sometimes, a single drop can make a whole difference, wouldn't you agree? I love your videos, keep it up!

Is that enough to get a good reaction with sugar?

@TheHomeScientist Thankyou, and you're welcome!!

You made me jump when you dropped the cap! Will this method work for determining the concentration of hydrochloric acid using pH paper instead of phenolphthalein? I realize that the amount of sodium hydroxide to neutralize will probably be a little different. I have a quart (liter?) bottle of hydrochloric acid. The lid was cracked and the label deteriorated to the point it was no longer legible. Being the cheapskate that I am, I'd prefer not to waste it. Appreciate your time and your videos.

I bought 5 gallons of battery acid at Napa. It is stored in a bag inside a box. I would like to concentrate it and then store it in something more secure. Can I find some kind of container around the house that I can safely store it in?

At my pops lab at CSIRO they accidently burnt PVC pipe It lets out sulfuric acid gas i believe.or sulfur dioxide gas, Wouldnt it be easier to use titration apparatus for that?

you a cool man your like my idol man and i have only seen this video if you dont mind me asking what did you study how many years and what kin of jobs will be available i am looking forward to pursue this career

thanks santa

@jwarmstrong you said you boil down your scif to slmodt 99% concentration. if i recall correctly, sulfuric acid forms an azeotrope with water at about 70%. how do you deal with that?

@TheHomeScientist also what career in chemistry lets you be around more stronger acids like for example what typr os chemist are you

Excelent vidio

what brand is it? most other drain cleaners are just sodium hydroxide based or lye

hey man, ive recently been making sulfuric acid for my school project through the electrochemistry of CuSO4(aq) using two nails, one cooper (the other one im not sure, I just found it in my garage). However once ive finished the process im left with a somewhat transparent, but yellow substance, which im assuming is dilute sul. acid with some sort of contaminant mixed in, and when I boil it down, it turns almost a black/yellowish color. and mixed with sugar nothing happens, any ideas why?

Very well done, although I was always taught to never pore a chemical back into its reagent bottle

hey old man thx! now i can actually do some experiment thx to ya. i been searching for a good source of sulfuric acid for a long time :D

Thanks for reply. But how do I turn up the left one? I dont see any option to make this setting.

Great video. Personally, I can get 44% sulfuric acid from ''liquid lightning'' drain cleaner (I really like that name). Not bad. I hope the rest is just water so I'll be able to purify it and get a good yield. Is there a way to know whether or not there are other impurities (I already read the msds, it wasn't useful)?

@59Ballons Sulfuric acid is used in lead acid batteries. If you run your car battery down all the way it will be dead. You can revive the battery by adding sulfuric acid to it. There are many dangerous things sold to the general public. Like cars, gasoline, alcohol, McDonalds hamburgers ETC. Unfortunately some things get banned because someone does something stupid with it. But cars are legal despite the fact that people are stupid with them all the time.

I bought a bottle of this sulfuric acid since my supply from battery acid is almost out. I was going to use it to make CuSO4 using electrolysis. However, when I began to add acid to the water it quickly began to react and put off gasses. This instantly gave off an alarm to me since water doesn't react with my sulfuric acid from battery acid. When I measured the acid I did notice that it wasn't as clear as what you have. I purchased the same brand and bottle you have from ace. Kinda confused as to what I should do with it now.

@vmelkon

10 жыл бұрын

I imagine it is heat of hydrolysis and some of the water vaporizes off. I can't comment on the clearness. Mine is clear but has a green organic compound added.

Rest In Peace Robert

Why not take the original ml of liquid out of the bottle? Or did you want to show the colour?

hopefully someone knows an answer for me i make copper sulfate and zinc sulfate by making a weak solution of sulfuric acid by mixing sodium bisulfate into distilled water until no more disolves after these experiments i wanted stronger sulfuric acid so i made my sodium bisulfate and boiled it down and set it aside well i wanted it stronger so i boiled way down to almost no liquid left and i let it cool when i checked back on it it had crystallized into really sharp crystals what are the crystals

What was the original volume of water in the titration beaker?

Great videos! I purchased 2 bottles of "drain cleaner" H2SO4 from Hank's Hardware (another chain store) each a year apart. The first bottle, from a year ago, had C colloids (brown to black). The bottle from a few days ago was in the same condition. How can I "clear" this up? If a filter, what size and what kind of material? Chemically bind the C? Besides ground glass stoppers, what kind of stopper can handle gases from synthesizing nitic acid via a retort/condenser? Thank you!!!

@TheFireGoose

2 жыл бұрын

I know this was 10 years ago but yes you could start off by trying to filter it, it might not do much but perhaps something but then what you want to do is just distill it to purify it, you can also distill it to raise its concentration but most drain cleaners are pretty concentrated anyways.

Not bad for simple stuff like drain opener :O

Dropping the cap scared me

how do you get the carbon out of the acid?

@algae1000 did you try filtering it? thst is a goof firdt step and will remove modt suspended carbon d

I am also having a home lab and I'm 13 and a half years old. I am super careful.. The source of Sulfuric Acid s great, if you can, check my video of handling sulfuric acid! By the way, I would love to get many sources of H2SO4 but I live in Europe and here it is very hard to find!! THANKS AGAIN!!!

@dylanwillms1275

7 жыл бұрын

Wundo.Science im 14 years old and also live in europe its very hard to get

Great video! I have read your book on home chemistry and there's no doubt it helped me put my lab together. In home depot, I found a bottle in a heavy-duty plastic bag, but when I looked at the contents, it was just concentrated sodium / potassium hydroxide solution. Have you found this anywhere else besides Ace? There isn't one near me. Thanks!

@cannagorilla

7 жыл бұрын

ParadoxChem126 True Value caries Rooto professional drain cleaner and Wal-Mart has the Liquid lighting Virgin sulfuric acid drain cleaner.

Could you do something about your sound levels?

Interesting video, thanks for posting. one question though, why did you not use your burette? Performing a titration with graduated pipettes is highly inaccurate,

@joeweeks850

10 жыл бұрын

+invertedflow The point still stands. Since he has authored a wonderful guide to home chemistry, you would think that he would use a burette, and know where the proper endpoint is. The pink was persistent long before he stopped adding titrant.

@gypofrompast

10 жыл бұрын

***** My point being if you're going to do something, you may as well do it right.

Cool

@Lloydy9101 He's not from NurdRage . . . he was just promoted by NurdRage and the accents are the same because he lives in the US and Dr. Lithium is in Canada.

It may be concentrated but it has organic inhibitors in it so it doesn’t corrode metals as hard. It can be purified by (vacuum)distillation but that is hazardous

I used to work a job where I would have to clean saw blades with muriatic acid, no gloves, no eye protection ot speak of, but I had my own. of course without the NaOH that we dunked them in my hands would have likely been fried. It was a trick of speed.

@TheHomeScientist You should use them for titrating. They make swirling so much easier.

@commentatron

6 жыл бұрын

Right? (I was going to wait until your comment was ten years old, but I couldn't wait any longer).

depending on this brand's age of the acid it can be dark brown or perfectly clear. fortunately i when i bought mine the cap paper wasn't even the slightest dehydrated very pure stuff!!

Why dilute the acid before titration??

@nathanwilefrazier You are correct.

Best drain cleaner ever.

agreed with you.

update: at autozone 33% sulfuric acid for batteries is $3.99 a quart but advance auto is $11 a quart. I buy 3 quarts of 33% and boil them down to almost 99% concentrate

Can this be used for tatp

I bought 18M H2SO4 several years ago. They came in 10l containers. Originally, the acid was clear, but over time, even the heavy duty HDPE containers break down/char You can see filaments of carbon suspended in the liquid. Also, I found chemistry grade glass has enough carbon that high M acids can digest given enough time. Does anyone know a shelf-life of the HDPE plastics in high M acids?

I wish this guy still made videos

@commentatron

6 жыл бұрын

He does, but you have to be deceased to see them.

You earned an achievement +1 more sub :D

I can't find that same brand of drain cleaner. I can only find " 93% virgin sulphuric acid". what is this? will it work?

@TheChemistryShack

9 жыл бұрын

Camroc37 Depends on what you need it for. Is it clear-ish or strongly orange/black? For most applications 93% can be substituted for 98%

That is the coolest kitchen I have ever seen. I want mine like that but the wife would kill me for sure. Lol

It seems ace no longs sells this product. Could you verify that and if it's true how do you obtain your acid now?

Oh, that can be the problem.. I have connected my speakers only on one channel, didn't remember this. I'll try to connect a mono plug tonight, then it should work. Lets see :) Thanks

@silversleuth1 Copper does not react well with hydrochloric or sulfuric acid, only cold dilute nitric acid (strange). most likely if it does react it's creating a passivation layer, could try hydrogen peroxide addition.. the best way to make copper sulfate is to set up an electrolytic cell. Use copper electrodes, pour in sulfuric acid, and magnesium sulfate (epsom salt you can buy at a drug store or grocery store) and run the cell, blue copper sulfate will form).

@TheHomeScientist I am given to understand boiling H2SO4 will not give concentrations much over 75%. 98% H2SO4 is made commercially with burning of Sulfur under a presssure bell no?

I know! He is like the most well known home chemist out there, and I would expect more views on the videos, especially because his videos are on nurd rage's channel too!

what is the ph of pure sufuric acid?

All your videos has only 1 sound channel (left speaker only)

You can usually find the concentration on the MSDS sheet, usually available on the manufacturer's website. Mine was 94.19% concentration! Wow!

@cannagorilla

7 жыл бұрын

TheResidentSkeptic what brand do you have?

What is with sound?

my drain opening sulphuric acid is tinted with some kind of gunge that is BRIGHT RED already... which makes looking for a pink titrant kinda hard.

@niklassteirer7335

7 жыл бұрын

edgeeffect use another color indicator... there are plenty. methyl orange, methylene blue,...

@edgeeffect

7 жыл бұрын

Thanks ... although since I've learned that the "red stuff" is actually "inhibitors" and they can be broken down with Hydrogen Peroxide, I could always do that (although, I'd have to move to a country where I'm allowed to have Hydrogen Peroxide first ;) )

Why didn't you use your burette?

wasn't it easier for the determination of the actual concentration to measure the density of the original acid? kind regards

@alexgussak8603

8 жыл бұрын

+196Stefan2 No, since you dont know what other stuff you have in there

hey! you are from nurd rage, the way you talk, your pronunciations

Can't you just boil it to remove the water?

So you say in this vid that anywhere below 50% is not concentrated...well what is the 37% 12M HCl we made in your other vid considered? apparently its "reagent" grade which means

@cannagorilla

7 жыл бұрын

Kyle x it depends on the chemical in question. The concentration of HCL is judged by the amount of HCL gas that can be absorbed in to water. HCL forms an Azeotrope at 37% roughly depending on local pressure.

@burnroe6611

5 жыл бұрын

Same with nitric at 68

Sulfuric acid is a strong dehydrating agent, but it won't burn or char your skin instantly unless it is boiling or mixed with something else. Nile red had it on his hand for 25 seconds and was fine. Just wash it off as soon as possible and don't get it in your eyes.

@niklassteirer7335

7 жыл бұрын

The Chemistry Kid yep, we dont have to use gloves in the lab too

you might need to over tiltrate a bit, because the grey tint of the indicator is hard to see! :(

Did you say "not the pipette I used to draw up the acid" or "not the pipette I used to drop the acid"?

@commentatron

6 жыл бұрын

I heard: Knot the pipe, pet. I used to draw up the ass, Sid.

Please answer: Why is acid so "corrosive" but it stays in a plastic bottle, and doesn't burn through a cheap plastic pipette? Why is it sold in auto parts stores if it is so "dangerous"? P.s i know its dangerous. I'm just confused :)

Tiss tiss tiss. If I recall correctly, you never return unused chemicals to their original containers...

@98JMA Right... think this is what is refered to by under a bell....

i dont get audio :(

u should use burette for titration

why not just concentrate the acid byboiling?

@HUsoldier171 lol sodium bisulfate doesn't make H2SO4 in solution. All you did was dissolve the NaHSO4 in water then crystalize it back out.