Chem Paper 6 (All discussions here Please)

[Saturation]

Yeah! the last qs!? what did u write for it???
overall i think it was a very fine paper.

 

[SoOona]

OMG i cant believe i did it wrong i get it now it was dehydrated so pink to blueeee .. i think thermal decom is right i dunno i did alot of weird stuff and for the sulphuric acid present i dont remember wht i wrote hmm and W opened i wrote for excess gas 2 escape for somereason i was thinking of it as escape for heat so it doesnt overheat ... but they were so much stupid 1 mark confusing questions if any 1 has answers for them plzz addd and i drew the the graph over the original 2 ..

 

[Saturation]

Relax, don't worry about what you got wrong, just concentrate on Maths! (if u do take it)!!!
Cheers!

 

[SoOona]

Maths yessss ... GOOd luck

 

[Dean713]

for the last ques on how to obtain copper metal from Copper carbonate i explained the process of electrolysis...for the ques with y the tube was left open i put to allow the gas to escape...but im not sure about those answers...

 

[wazzim66]

For the last question of the first variant i said that hyrochloric acid is added to copper carbonate which turns it into copper2chloride then electrolyse it or watever
i think its ryt i am not very sure

 

[mr.ives_94]

well it seemed like i did second variant. I dont remember anything about Steel and copper apart form the malachite question. I gotta ask smth though. For the first question, why was the gas passed through Sulphuric Acid?

 

[XPFMember]

well steel and copper is the second variant and malachite in the 1st variant
first question reason was to dry the gas H2SO4 is a drying agent

 

[Rumaisa Sohail Malik]

Can anyone please give me lots of examples of oxidation reaction