Chemistry P31

[Abu mota]

I got AgCl as the charge on Ag was +1....Ag(I).....so the second mark was for the state like (l),(s),(g),(aq) etc....

They never ask for state symbols it is 1 mark for correct formula and one mark for balanced

 

[raysonzaffar]

Isn't silver just Ag+ not 2+?

it wz like tht but in ma book we first have to take the half equations ...................... 2Cl- -----------> Cl2 + 2e-

 

[EpicLol]

Hey on the volumes of the gases what did you guys get? I wrote 10 and 65, no idea if it's right.

It was like 40/8 = 5 so the value given * 5 is the answer dont remember the answers sry

 

[NabzJ]

2Ag+ +2Cl- -------> AgCl2................it wz for 2 marks u were not only supposed to write down the equation....also had to balance it !!!!!!!!!!!!

No ! ag has oxidation state of +1 , and u had to include state symbols that gives u the other mark , its already balanced

 

[EpicLol]

They never ask for state symbols it is 1 mark for correct formula and one mark for balanced

They did ask for the state symbols....there was no balancing as it was AgCl.....I put Ag as solid Cl as gas and AgCl as solid....

 

[rjcooo1]

was the volume of the gases 10 and 65???

 

[somaya]

I think it was 2-3.

do not increaz plzzzzzzzzzzzzzz

 

[raysonzaffar]

They did ask for the state symbols....there was no balancing as it was AgCl.....I put Ag as solid Cl as gas and AgCl as solid....

wat state symbols.........no ..........i dont really noe...........ur ans. has devastated me...........but still half ov my class wrote the same !!!!!!!!!!!!!

 

[Abu mota]

They did ask for the state symbols....there was no balancing as it was AgCl.....I put Ag as solid Cl as gas and AgCl as solid....

I dont want to argue much but im pretty sure it said only write ionic formula and it was chloride not chlorine so gas is wrong anyway

 

[Hassaan Asif Alam]

I wrote the same thing!xD

it was important to write the states...the question mentioned it..

 

[Hamzeh S]

Guys is 154-158 can it be an A* :S last year it was 134 and in october 141 so ?

 

[EpicLol]

wat state symbols.........no ..........i dont really noe...........ur ans. has devastated me...........but still half ov my class wrote the same !!!!!!!!!!!!!

sry u will get 1 mark though

 

[raysonzaffar]

2 markz and wt waz da total markz 4 last question

4 mrkz Respectively !!!!!!!!!!!!!!!!!!!

 

[EpicLol]

Guys is 154-158 can it be an A* :S last year it was 134 and in october 141 so ?

Its prbly gonna be higher as this paper was considered easy by a lot of ppl so overall it might be like 160-170 or higher as A*

 

[raysonzaffar]

sry u will get 1 mark though

oh i will thnk god ................r u sure !!!!!!!!!!!!!!!!!....n wat abt the electrode question !!!!!!!!!!!!!!!!

 

[EpicLol]

oh i will thnk god ................r u sure !!!!!!!!!!!!!!!!!....n wat abt the electrode question !!!!!!!!!!!!!!!!

I put B and Im pretty sure its that....but Im not perfect so it might be wrong

 

[MERIHAN]

for me i did a careless mistake !!! i got mole ratio correct but forget to write . H2o!!!! how stupid !!!!

 

[areebaization]

The graph is gonna shoooooooooooot up and touch the sky!

 

[areebaization]

ppl for the second last Q.
How can we measure the rate of reaction?
Measuring the voltage shown in the calibrated voltmeter....Will they mark it wrong any idea? :/

 

[EpicLol]

The graph is gonna shoooooooooooot up and touch the sky!

I hope it stays lower than like 175 coz higher than that then I might not get an A* in total