Chemistry 9701/P22

[shehryar22]

What was the bond enthalpy of c-f bond. and wasnt the table of kc filled like this 0.04 0.04 0.04 etc? Please reply

 

[girlscampisra]

shudve been co2

 

[girlscampisra]

485 kj/mol

 

[Hateexams93]

everything was like : suggest this , suggest that .. seriously wtf ..hate it

 

[shehryar22]

How did you find the final kc value?

 

[girlscampisra]

ddid..nt go well, i did it wrong!! just hopong for gt to fall..

 

[hassam]

it was carbon dixide......simple.....

 

[girlscampisra]

and the second one which should not be an acid?

 

[shehryar22]

I dont remember but i gave some compound on sodium. For the non acid part

 

[Hateexams93]

i wrote Ca compound and i guess its wrong

 

[m2rulz143]

i got 0.429 for kc and the table was 0.03 0.07 0.03 0.03 and the gaseous reagent was co2 and non acid reagent was na2so4... how many chiral carbons were there i wrote 1??

 

[girlscampisra]

there were 2

 

[shehryar22]

Ca and Na should be right because they'd displace the Ba.

 

[Hateexams93]

2 chiral , and the group was ester

 

[AizaAnjum]

it could have been anysulphate containing compound other than sulfuric acid which they had given plus the compound had to be soluble calciumsulfate and lead sulfate k ilaawa the rest would be acceptable/ i wrote zincsulate though

 

[Hateexams93]

Ca as well ?

 

[AizaAnjum]

i hopE 0.44 is the correct kc/ and i hope the thresh hold falls =S

 

[girlscampisra]

very, very bad paper

 

[m2rulz143]

and y wouldnt ester react with naoh and what would happen if all the water is removed??

 

[AizaAnjum]

Calcium and lead sulfates are not soluble.