CHEMISTRY PAPER 34 On 31st MAY

[darks]

How did your practical for v34 go? was it hard?
and no titration I heard?

Yes it went terrible, after all the great papers.. my total now on the border of A* and A, around 190/260 (considering a 30 in p1) i hope i ace p1 now.. but i find it hard to go above 32-33 in it. And yes no titration!

 

[DeadbeatCIE]

Any idea what was FB8

I wrote K+ and I-
I- was identified right off the bat because of the blue-black colour with starch but I- on it's own cannot identify starch only KI and NaI can soo i took a leap of faith and wrote K+

 

[Laveeza]

I wrote K+ and I-
I- was identified right off the bat because of the blue-black colour with starch but I- on it's own cannot identify starch only KI and NaI can soo i took a leap of faith and wrote K+

Nope nope nope it was carbonate and I- .......effvervescence with hcl !!!!

 

[Laveeza]

There was no way we could identify na or k

 

[DeadbeatCIE]

There was no way we could identify na or k

Surprisingly i got no effervesence and being a bio student this HAD to be the answer even the pics showed KI

 

[darks]

What about ammonium? There was no ppt. with NaOH

 

[darks]

in the first table, The last column had "no visible reaction" all along. And then effervescence with Na2CO3?

 

[Hassan (SHT)]

in the first table, The last column had "no visible reaction" all along. And then effervescence with Na2CO3?

you are right man, i had the same observation

 

[DeadbeatCIE]

in the first table, The last column had "no visible reaction" all along. And then effervescence with Na2CO3?

Very true I had the same thing, That's why you had to conduct separate test for it
It was NO3