Chemistry practical 33

[BlahBlahBlah_]

Guys, if you have any idea regarding tomorrows chemistry practical, please tell. God bless you.

 

[Cookiemonster3012]

having mine as well wish you luck...

 

[BlahBlahBlah_]

T

having mine as well wish you luck...

Thankyou so much. Wish you all the luck for it too. If you get any idea ragarding. Please tell.

 

[Cookiemonster3012]

how was the paper? was the acid monoprotic or diprotic?

 

[BlahBlahBlah_]

how was the paper? was the acid monoprotic or diprotic?

I wrote diprotic, the ratio of hydrogen ion and Z was 1:2. Thats what i did. What about you?

 

[Cookiemonster3012]

I wrote diprotic, the ratio of hydrogen ion and Z was 1:2. Thats what i did. What about you?

yes i wrote the same thing

 

[Tauqir_hamed]

How did you all do ? I found the last question quite tricky

 

[Cookiemonster3012]

How did you all do ? I found the last question quite tricky

did you manage to determine the anions?

 

[Tauqir_hamed]

did you manage to determine the anions?

Couldnt finish it on time
Got mg 2 + ,ammonium as the cations though

 

[Cookiemonster3012]

Couldnt finish it on time
Got mg 2 + ,ammonium as the cations though

yea i got those cations as well, my friends said that FA8 anion was an unknown while FA9 anion was carbonate...

 

[M.@(-)M@D $0(-)@!L]

what did you guys write for the last two questions on enthalpy change questions page??
first one was about accuracy
and the second was about HCl being more exothermic than monoprotic acid(H2SO4)?

 

[BlahBlahBlah_]

what did you guys write for the last two questions on enthalpy change questions page??
first one was about accuracy
and the second was about HCl being more exothermic than monoprotic acid(H2SO4)?

For the accuracy one i wrote that we should use more anount of reagent fa3 in that case i guess, as it will reduce the percentage uncerntainity.
And i don’t remember what i wrote for the other one.

 

[BlahBlahBlah_]

yea i got those cations as well, my friends said that FA8 anion was an unknown while FA9 anion was carbonate...

Mine was mg2+ and then it was nh4+ and cl-, most of my friends had these so idk really.

 

[ujjwal jha]

both of them are solutions. so how can you increase amount. the answers should be to increase the concentration of the solution

 

[M.@(-)M@D $0(-)@!L]

For the accuracy one i wrote that we should use more anount of reagent fa3 in that case i guess, as it will reduce the percentage uncerntainity.
And i don’t remember what i wrote for the other one.

yep I wrote the same except I didn't mention it will reduce percentage uncertainty though. Hope I don't lose a mark there.

 

[ujjwal jha]

yep I wrote the same except I didn't mention it will reduce percentage uncertainty though. Hope I don't lose a mark there.

this isn't a salt. as both of them are solutions so i think you cannot change the amount . else concentration could have been increased so as to have high increase in temperature. so that there is less percentage error while calculating temperature.....

 

[Tauqir_hamed]

Wont this be correct : carrying out the experiment in a closed chamber ? Did it say to give reason as well ?

 

[ujjwal jha]

yes

Wont this be correct : carrying out the experiment in a closed chamber ? Did it say to give reason as well ?

I guess it did. as you have to mention how will it make the experiment more accurate

 

[Tauqir_hamed]

what do you guys think the threshold will be? was this an average cie chemistry practical paper or slightly easier/ difficult