why do we have to use 24cm^3 of water for the hydrated copper (II) sulfate but 25cm^3 of water for the anhydrous copper (II) sulfate?
@theunknownchampion949224 күн бұрын
because the hydrated copper already contains some water in it so to balance it out we use less of it. This may be a bit late lol
@astrxlxgy_gd20 күн бұрын
@@theunknownchampion9492 alr thanks for the reply even though my exams ended a month ago lol, i realized it right after I sent the comment but didnt bother to remove it
@igetmoreassthanatoiletseat82644 ай бұрын
Ty 4 this girl I'm meant to write a method for this and it's due in 1 hour 😻😻😻
@liyanacapper80435 ай бұрын
why are the arrows pointing down, i thought that was only used for combustion values?
@isaniity6 ай бұрын
im just confused why the arrows point downwards?
@choosingmusic11488p6 ай бұрын
helped for my gcse next week
@user-us8km6rz6c10 ай бұрын
Thank you ❤🎉
@ghostofday502511 ай бұрын
i am curious as to how the anhydrous copper(ii)sulphate did not react with moisture in air to form hydrous copper(ii)sulphate?
@OmniversalInsect8 ай бұрын
I think it did a little bit because the colour is very slightly blue
@xenne. Жыл бұрын
day before paper one
@ayesha1176 Жыл бұрын
thank you so much !!
@A--Hollow Жыл бұрын
Thanks!
@MK-sh7ol Жыл бұрын
Hi, thank you for this video, it was really helpful. Can you please explain why after finding the temp change in Celsius you didn’t add 273 to convert it into kelvin? Because you changed the sign from c to k but the numbers remained the same.
@bloothechronosapien4288 Жыл бұрын
Change in temperature is used in the equation so the difference in kelvin is same as difference in Celsius. Say temp changed from 20 to 25 C, 25 - 20 is same as (25+273) - (20+273)
@sarahfahdah5008 Жыл бұрын
thank you
@administracaogestao2664 Жыл бұрын
Thank you
@orangepotato2112 Жыл бұрын
Big respect
@papakenny52592 жыл бұрын
why didnt you convert the temp to kelvin?
@zahrahussain4511 Жыл бұрын
you don't have to it is exactly the same my chem teacher said
@727Joshy Жыл бұрын
5:28
@RosyMSPAngel2 жыл бұрын
mass of what? for the equation
@rhysstevomusic13382 жыл бұрын
You forgot to minus the q. Everything else is helpful!
@mohamedhashi92762 жыл бұрын
Great vid ! 👍🏾
@jackparker95972 жыл бұрын
the timer flashes cum lmao
@esotericmedic28412 жыл бұрын
lol
@aadamasghar47942 жыл бұрын
Thank you!
@charlotteclaireccastro15732 жыл бұрын
didn't understand a word. :) thanks anyways
@hoonlvr72133 жыл бұрын
THANK YOUUU
@kiranjackson74123 жыл бұрын
tysm
@Jess-bn8gm3 жыл бұрын
Love this. Thanks xx
@elettrabelaqua45753 жыл бұрын
I didn't understand the calculations How did you get the 159.61 in 4.06/159.61?
@llii3383 жыл бұрын
This is the molar mass for cuso4 and she divided the mass by the molar mass so she gets moles
@elettrabelaqua45753 жыл бұрын
@@llii338 thank you
@cherrycolagames31873 жыл бұрын
I’m doing this practical next week, thank you for this video :-)
@Xxxkska9 ай бұрын
What grade did you get
@shourya96494 ай бұрын
wat grade did u get for ur final exam
@rudi_xie61393 жыл бұрын
Thank you
@christabelrwatizha73143 жыл бұрын
This is really proof that not knowing something in this age is out of ignorance because there's so many resources on the internet that tach almost anything
@barksstuff81413 жыл бұрын
shut the fuck up
@Cornyyylieus2 жыл бұрын
yet still u cant spell 🤡🤡
@jamesmcmillan27413 жыл бұрын
Many thanks Tabitha you're magic!
@mahdiahmed19483 жыл бұрын
hi everybody in my chem class, idk if you will see this comment but pls like :)
@adityaaher87623 жыл бұрын
Really helpful
@alyasa76173 жыл бұрын
Nidhish is hot
@safatariq97873 жыл бұрын
What would you write for a hypothesis?
@A--Hollow Жыл бұрын
Who knows lol 2 years later
@emmanuelokungbowa9 ай бұрын
There is direct relationship between rate and temp 🤷♂️
@Dames-lo1dh6 ай бұрын
@@emmanuelokungbowa 3 years later...lol
@emmanuelokungbowa6 ай бұрын
😹
@robogecko40674 жыл бұрын
The units for Q are J not Jmol-1
@zakariah98005 жыл бұрын
Thank you! Honestly it was hard to picture the whole process without a demonstration!
@danielahmed20515 жыл бұрын
Can you please make videos on the other practicals as well as the a level ones
@oliviag32915 жыл бұрын
thank you so much this is really useful :)
@farhaanhasan5 жыл бұрын
the reaction is exothermic therefore the overall enthalpy change is negative -41.02. H1 should be -36.95 as it is an exothermic reaction as the temperature rose by 9. H2 is an endothermic reaction therefore should be +4.02.
@pardhivkondreddy68482 жыл бұрын
Yes, I had the same doubt. Q = mcΔT however Q here is energy. Not ENTHALPY CHANGE. The equation for enthalpy change must be: ΔH=-mcΔT Hence ΔH3 in the experiment conducted would be -41.0 J per mole and not 41 J per mole. Correct me if I am wrong.
@davankk28572 жыл бұрын
@@pardhivkondreddy6848 wouldn't the equation for enthalpy change be (delta)H = -mc(delta)T/n ?
@maxmarshall4842 жыл бұрын
@@davankk2857 yes, if temp increases q=negative, if temp decreases q=positive, hence q is in J convert to KJ then Kj/Mol = enthalpy change
@rhysstevomusic13382 жыл бұрын
It's because it's supposed to be -q/n
@rhysstevomusic13382 жыл бұрын
Also delta H1 has been added up wrong, should be -37.62. Also, Delta H2 should be 4.01.
@varunraju15695 жыл бұрын
Is this applicable for CIE AS Level examinations?
@samanthawong81053 жыл бұрын
check the specification on their website
@killerman-gv1qp5 жыл бұрын
Dear ma'am are these results accurate??
@10000subswithnovideos.4 жыл бұрын
No.
@skerpy81455 ай бұрын
everyone gets different results my friend. You are probably in university now so this probably will not help but just saying.
@GSLChannel5 жыл бұрын
What control variables are there?
@elliotskunk3 жыл бұрын
person reading the time taken for cross to dissapear, temperature of room, concentration of Hcl, concentraion of Na2S2O4,
@sen-pz1rb3 жыл бұрын
@@elliotskunk bit late aha
@elliotskunk3 жыл бұрын
@@sen-pz1rb better late than neva
@elliotskunk3 жыл бұрын
@@amyamy7021 hehe, now remember to pay it forward :)
@lucy-qk4id2 жыл бұрын
@@amyamy7021 and me!
@tommahon87796 жыл бұрын
i am so glad there's videos like this on the internet XD
Пікірлер
thank you and ur hot voice😉
why do we have to use 24cm^3 of water for the hydrated copper (II) sulfate but 25cm^3 of water for the anhydrous copper (II) sulfate?
because the hydrated copper already contains some water in it so to balance it out we use less of it. This may be a bit late lol
@@theunknownchampion9492 alr thanks for the reply even though my exams ended a month ago lol, i realized it right after I sent the comment but didnt bother to remove it
Ty 4 this girl I'm meant to write a method for this and it's due in 1 hour 😻😻😻
why are the arrows pointing down, i thought that was only used for combustion values?
im just confused why the arrows point downwards?
helped for my gcse next week
Thank you ❤🎉
i am curious as to how the anhydrous copper(ii)sulphate did not react with moisture in air to form hydrous copper(ii)sulphate?
I think it did a little bit because the colour is very slightly blue
day before paper one
thank you so much !!
Thanks!
Hi, thank you for this video, it was really helpful. Can you please explain why after finding the temp change in Celsius you didn’t add 273 to convert it into kelvin? Because you changed the sign from c to k but the numbers remained the same.
Change in temperature is used in the equation so the difference in kelvin is same as difference in Celsius. Say temp changed from 20 to 25 C, 25 - 20 is same as (25+273) - (20+273)
thank you
Thank you
Big respect
why didnt you convert the temp to kelvin?
you don't have to it is exactly the same my chem teacher said
5:28
mass of what? for the equation
You forgot to minus the q. Everything else is helpful!
Great vid ! 👍🏾
the timer flashes cum lmao
lol
Thank you!
didn't understand a word. :) thanks anyways
THANK YOUUU
tysm
Love this. Thanks xx
I didn't understand the calculations How did you get the 159.61 in 4.06/159.61?
This is the molar mass for cuso4 and she divided the mass by the molar mass so she gets moles
@@llii338 thank you
I’m doing this practical next week, thank you for this video :-)
What grade did you get
wat grade did u get for ur final exam
Thank you
This is really proof that not knowing something in this age is out of ignorance because there's so many resources on the internet that tach almost anything
shut the fuck up
yet still u cant spell 🤡🤡
Many thanks Tabitha you're magic!
hi everybody in my chem class, idk if you will see this comment but pls like :)
Really helpful
Nidhish is hot
What would you write for a hypothesis?
Who knows lol 2 years later
There is direct relationship between rate and temp 🤷♂️
@@emmanuelokungbowa 3 years later...lol
😹
The units for Q are J not Jmol-1
Thank you! Honestly it was hard to picture the whole process without a demonstration!
Can you please make videos on the other practicals as well as the a level ones
thank you so much this is really useful :)
the reaction is exothermic therefore the overall enthalpy change is negative -41.02. H1 should be -36.95 as it is an exothermic reaction as the temperature rose by 9. H2 is an endothermic reaction therefore should be +4.02.
Yes, I had the same doubt. Q = mcΔT however Q here is energy. Not ENTHALPY CHANGE. The equation for enthalpy change must be: ΔH=-mcΔT Hence ΔH3 in the experiment conducted would be -41.0 J per mole and not 41 J per mole. Correct me if I am wrong.
@@pardhivkondreddy6848 wouldn't the equation for enthalpy change be (delta)H = -mc(delta)T/n ?
@@davankk2857 yes, if temp increases q=negative, if temp decreases q=positive, hence q is in J convert to KJ then Kj/Mol = enthalpy change
It's because it's supposed to be -q/n
Also delta H1 has been added up wrong, should be -37.62. Also, Delta H2 should be 4.01.
Is this applicable for CIE AS Level examinations?
check the specification on their website
Dear ma'am are these results accurate??
No.
everyone gets different results my friend. You are probably in university now so this probably will not help but just saying.
What control variables are there?
person reading the time taken for cross to dissapear, temperature of room, concentration of Hcl, concentraion of Na2S2O4,
@@elliotskunk bit late aha
@@sen-pz1rb better late than neva
@@amyamy7021 hehe, now remember to pay it forward :)
@@amyamy7021 and me!
i am so glad there's videos like this on the internet XD
This is fantastic!