Chemistry 9701/P22

[girlscampisra]

i worte naoh is neutralized by acid, hcl..

 

[AizaAnjum]

dont know bout the ester thingy but when water is removed equilibrium moves in the forward direction hence more of the ester is formed

 

[Hateexams93]

i'm screwed

 

[mizmoody]

i messed up kc ! :'(

 

[Hateexams93]

lol i didn't even do Kc

 

[m2rulz143]

i messed up with the descriptive part...

 

[AizaAnjum]

the subject sucks. what else can one say.. apart from stupid mistakes that one is bound to make.... i got the last parts of the last question wrong.. plus explanation wale questions were weird... plus im not sure about kc.. i do hope we get an ecf if kc is not 0.444

 

[Anonymousx3]

What did you guys write for that question that asked why CCl2F2 reacts with ozone but CH3CH2F don't? I wrote that the C-Cl bond energy's lower than the C-F one but I'm pretty sure that's wrong.

 

[Hateexams93]

yes thats what i wrote

 

[Hateexams93]

what was the Y compound ?

 

[AizaAnjum]

that was the only question i was deadddd sure of =D and yeah you are right .we had to explain in terms of bond energy. cl radicals form because the bond strength is lower than that of c f

 

[Anonymousx3]

what was the Y compound ?

I totally messed this bit of the question up. I wrote that it was BaSO4 and that H2O2 was the other product.
I couldn't think of anything else!

 

[AizaAnjum]

i got the same stufffffffffff

 

[Anonymousx3]

But is H2O2 soluble in water?

 

[Hateexams93]

this paper was 7ara , aslan its the only subject that i studied , and it went soo bad for me , hhhhh...don't even know what to expect from other subjects

 

[m2rulz143]

bas04

 

[AizaAnjum]

i dont know =S but that was the only possible thing

 

[AizaAnjum]

h202 is soluble. it forms solutions and is slightly acidic =D so i think we are ryt with baso4

 

[m2rulz143]

what was the Y compound ?

I totally messed this bit of the question up. I wrote that it was BaSO4 and that H2O2 was the other product.
I couldn't think of anything else!

it is right... it was the only thing possible as ratio was 1:1

 

[Anonymousx3]

i dont know =S but that was the only possible thing

Lol, k, I was going crazy thinking it was something like Ba(OH)2 but in the last few minutes I changed it.