You're videos are amazing, sir. Helped me a lot for my upcoming O'level mocks.

Oh geez I wish my chem teacher had a delivery like you . I would have been a chemist for sure but he destroyed it with his lack of respect for teaching and enthusiasm . Oh well I suppose I am lucky at 46 I have google and still thirst for knowledge ! Thanks for existing and your teaching style 🙏

@maximilinamush8618

5 жыл бұрын

Bitch

@qualstargaming4098

4 жыл бұрын

@@maximilinamush8618 No you

1-Fill a 25 cm3 pipette with NaOH 2-Pour the 25 cm3 of NaOH in a conical flask 3-Add 5 drops of Phenolphthalein to the flask (the colour will change to pink) 4-Carefully add HCL from the burette to the flask till the solution becomes colourless 5-Observe the exact volume of HCL needed for the reaction to neutralise 6-Repeat the experiment again with the same volume of acid and base without adding an indicator 7-Heat the salt solution till the point of crystallisation 8-Cool it, Crystals of the salt is formed

@richardhiggins6471

4 жыл бұрын

Thanks - a very clear and concise description of the method.

@MIrophage

4 жыл бұрын

@@richardhiggins6471 you're most welcome glad I've helped you

@Blessed_GI44

3 жыл бұрын

thank you!!! i needed this for school

When this was made 6 years ago but you have to learn it for school :(

@spring3459

3 жыл бұрын

@King slavic Vault boy yes very sad

@ilhamramadhan540

3 жыл бұрын

whats wrong with it?

@spring3459

3 жыл бұрын

@@ilhamramadhan540 because it's old stuff

So nicely explained! Easy to understand and to point

Saved my exams sir, Thank you so much!

salam..thanks sir thank u so much i was searching this type of reaction since many years and now i found it.....stay blessed always

how to make alkaline solution from pure gold which precipitates (insoluble) in h2so4, please???????? Please shere that info.

This was made in 2014 but we are still using it in school today

@richardhiggins6471

3 жыл бұрын

Pythagoras came up with his theorem 2500 years ago, but we are still using it in school today!

@isabellabamford8997

3 жыл бұрын

Lol yass

Thanks alot. Your video is so helpful

Anyone else watching this for year 8 science lol

@ironiesher

3 жыл бұрын

yea

@kayul5379

3 жыл бұрын

im watching it for year 10. your telling me people have learnt ths in year 8?!

@isabellabamford8997

3 жыл бұрын

@@kayul5379 oop Yh and year 7 but I loved school and they did it in year 8 that’s why the comments are about year 7 😂 I’m so sorry you learnt it late

@ironiesher

3 жыл бұрын

@@kayul5379 Rip

@evelzef

3 жыл бұрын

year 9 lol

Excellent video.

BRILLIANT!!

Very good video!

Helpful for my experiment next week....im subscribing to you

Who is watching for this year 7 science

@isabellabamford8997

3 жыл бұрын

Meee

@anayaasif7805

3 жыл бұрын

Me

@nodalmode

3 жыл бұрын

me

This is very helpful and interesting as well, THANK YOU VERY MUCH

Can we drink this ?

@richardhiggins6471

3 жыл бұрын

NO! Never drink anything in a science lab. Even if all the apparatus was 100% clean, and you had done the experiment perfectly to get a neutral solution (which is unlikely), it is still harmful. A relatively concentrated solution of salt is harmful and would make you sick.

@zerotwo3747

3 жыл бұрын

Richard Higgins thank you so much sir ☺️☺️😊

thank you so much! this really helped

What is the liquid that evaporates from the solution

@richardhiggins6471

Жыл бұрын

Just water.

What is the concentration for both chemicals plz

@richardhiggins6471

4 жыл бұрын

The HCl was 0.1mol/dm3. I added 11.8cm3 of this to neutralise 25cm3 of NaOH, so in an exam question you might well be asked to work out the concentration of NaOH yourself. Have a go!

Thank you so much sir! This will help me a lot with my Exams that are coming up in may!! Also do you have a video where you use materials in a chemical reaction?

@richardhiggins6471

6 жыл бұрын

Hi, I'm not quite sure what you mean by "materials in a chemical reaction"? Please could you give me an example.

Thank you so much sir! Needed this explanation for next week's exam!

@DBx33

2 жыл бұрын

How was the exam

@KEEPLAYING

2 жыл бұрын

@@DBx33 Hahahha it was 3 years ago but I'm sure it went very well!

Yo u saved my ass from my exam thxx alot dude

Cool experiment!

is it necessary to add pH solution???

@richardhiggins6471

3 жыл бұрын

You add phenolphthalein indicator (not pH solution) first time you do it to make sure that the alkali is exactly neutralised. Then you repeat with exactly the same volume of acid and alkali.

@aaronlad7697

3 жыл бұрын

@@richardhiggins6471 why does he mention getting rid of the indicator when repeating the experiment as this time no indicator is used, and so only the water needs to be removed to get pure crystals?

@chemistrywithdrh6514

3 жыл бұрын

@@aaronlad7697 Yes, you don't need indicator second time because you know how much acid is required to neutralise the alkali. So second time you just have a solution of sodium chloride. Evaporate the water and you are left with pure sodium chloride.

can I eat that? u know like sprinkle it on food?

@richardhiggins6471

4 жыл бұрын

In theory, if the experiment was done perfectly, you would just have pure salt (sodium chloride) at the end of the experiment so you could sprinkle it on your food, but there's no way you would literally do that as there might be impurities in the chemicals, dirt on the equipment etc.

@alphabrainy2676

4 жыл бұрын

@@richardhiggins6471 thanks for info .

@isabellabamford8997

3 жыл бұрын

No :(

thank you so so usefull covered evrything!!!

Thanks a lot

@Hmm34555

3 жыл бұрын

Your welcome comrade

Thank you so much sir it's helped me for my exam😊😊

Thank you, Dr.

Very true Theo

@artyt3238

3 жыл бұрын

👍

Very nice. Thank you.

Afterwards, filter the mixture and wash with cold distilled water and dry in an oven until it becomes a constant mass. Then, leave to cool in a desiccator.

@chemistrywithdrh6514

5 жыл бұрын

These steps wouldn't be necessary - not for a GCSE experiment anyway.

Very useful thanks dr

coooollll!

But can i eat the salt?

@richardhiggins6471

3 жыл бұрын

No - never eat anything in a science laboratory.

@shafiqsiddiqui2460

3 жыл бұрын

Why dont you try and then tell us what it was like.....if you're able to

nice

The corrosive warning liquid is definitely NOT Water!

Thanks for the video

Who is watching this for year 7 science 🧬

@samarahazad9499

3 жыл бұрын

for me class 5

Thank you!

Very helpful video

hi

Nice video sir

Switch on the subtitles while seeing 3:20

@alphinabenny1340

4 жыл бұрын

omggg

@artyt3238

3 жыл бұрын

Hahaha

@nodalmode

3 жыл бұрын

Lol

wowsuper you

helped a lot

You are best

I LOVE YOU

Ayo what up girlies

Ahh I know why he didn't bother stopping after the phenolphthalein round. The canteen needed more salt

@khemmy8594

4 жыл бұрын

E

@toxichitman9431

4 жыл бұрын

@@khemmy8594 you good?

Ok I like it picasso

who watched this for school

nyc video. thank you

Curry Fast pukkaz

Ugh i have my gcses

Kollam illa and bad

Anyone else watching this for year 7 science lol