Chemistry Exam Discussion - How was it?

[qwerty12]

Does DADCC AABCB CCCDD DABBB sound right for anyone?

[thetimeis]

Activation energy is 200-25 = 175
liquid to gas is endothermic.

[Jordzs]

Activation energy is 200-25 = 175
liquid to gas is endothermic.

Oh, just had a look at it again!! Grr, confused it for an Exothermic on the exam :/

[oneoneoneone]

Does DADCC AABCB CCCDD DABBB sound right for anyone?

I got the same as you querty but that may not mean much :p

[Suzanne]

What did you guys put down for Q15 MC? I ruled out A because that answer didnt take into consideration the 54kjmol-1 provided......anyone?

[dfgjgddjidfg]

15 is c

[qwerty12]

Does DADCC AABCB CCCDD DABBB sound right for anyone?

I got the same as you querty but that may not mean much :p

Ye i know, but just checked again, still looks right.

[Suzanne]

Are you sure? I put that down! But i think it could possibly be B?! Thanks!

[thetimeis]

I got 15 C too.
Question 9 for me was D, didnt think it said anything about the rate, but K=400 so forward reaction was favoured..Thinkign about it now I dont see any other way it could have been unless fwd rate > back rate, not sure though.

[aww12]

Does DADCC AABCB CCCDD DABBB sound right for anyone?

I got the same as you querty but that may not mean much :p

Ye i know, but just checked again, still looks right.

yeah, I got the same except I got 15 as C. I can't remember what the question was, and I felt one of the questions (water to steam) one was a bit ambiguous ._.

[Jordzs]

Q9 for me was A :/

[oneoneoneone]

K = 220, but Q=400. So Products > Reactants and hence rate of Backreaction > Forward Reaction so its C for q9

[Tonychet2]

Does DADCC AABCB CCCDD DABBB sound right for anyone?

i got all the same but 15 as C?

[qwerty12]

Q.15 is C. not D. :p

[thetimeis]

If products > reactants, products are being formed faster. Therefore forward reaction must be faster than back reaction.