Chemistry 9701/P22

[obsessedgenius]

yes, you would get the ecf mark. If you made a mistake on calculation but filled in the table and calculated Kc according to it, you would get all the marks except (stechiometric) calculation.
if you made a mistake in just the table, you would get ecf on the Kc but no marks for table..... :Rose:

 

[AizaAnjum]

if i get like 50 to 52 marks in todays thing will i manage to get a 90 above in my AS?

 

[boy2011]

yeah i wrote increasing green house effect.wt did u wrote?

 

[Islu_jf]

hey everyone .. i just got done .. p21
who gave it ??
and wht was the entire reaction for the Kc?????
I have no idea what i did with it

and OOOOMGGG i screwd up my organic bit ..
can sm1 pls tell me the ansers fr those????

 

[AizaAnjum]

this means i get 2 marks. I HOPE SO =D tmare munh mein ghee shakkar!

 

[AizaAnjum]

meine bongi maar di. i wrote k enhanced means improved so enhanced green house effect is like an increasing green house effect due to greenhouse gases other than those typically involved.... and there go another 2 marks of mine

 

[AizaAnjum]

meine bongi maar di. i wrote k enhanced means improved so enhanced green house effect is like an increasing green house effect due to greenhouse gases other than those typically involved.... and there go another 2 marks of mine

 

[robinho10]

hey everyone .. i just got done .. p21
who gave it ??
and wht was the entire reaction for the Kc?????
I have no idea what i did with it

and OOOOMGGG i screwd up my organic bit ..
can sm1 pls tell me the ansers fr those????

can u tell me the q's plz ? how was the exam??

 

[AizaAnjum]

hey what were the tests??? like the ones for either aldehyde and ketone and the second to confirm aldehyde?

 

[Anonymousx3]

i thnk ecf wil b applied here.btw wat was the answer of that questn abt wat is meant by enhanced greenhouse effect?

I wrote it's about how the earth is getting hotter because of the huge increase in CO2 levels (since industrialisation and stuff started). CO2 absorbs the infrared radiation given off by the earth when it cools at night but because there's so much CO2 now it's absorbing too much heat.

I think that's a little too much detail but it should have been something along those lines.

 

[Anonymousx3]

hey what were the tests??? like the ones for either aldehyde and ketone and the second to confirm aldehyde?

The one for either an aldehyde or ketone was with 2,4-DNPH and you'd see an orange precipitate.

Then, to confirm an aldehyde you would use either Tollens' reagent (and get a silver precipitate) or with Fehling's solution which turns from blue to red.

 

[robinho10]

guys who did p21!! plz tell me !!? was it easy!!?

 

[boy2011]

dat for aldehyde and ketone i wrote 2,4Dinitrophenyl hydrazine and to confrm aldehyde use tolens reagent whch wl gv silver miror wd aldehyde

 

[robinho10]

guys how was p21??!!! can any1 answer plzz?? n wat were the q's about??

 

[Islu_jf]

you guys ..what questions came in p22????

 

[libra94]

@islu if, did u give p21 yet or not??

 

[Islu_jf]

yo u guys ... p21 was tricky!!!!
i wanna know what came in p22!?!?!??!?!?!

 

[AizaAnjum]

you guyssssssssssssssssss how low can the gt actually go??? if its 50 i am happy with it. if its lower than 50 i am very happy with it =P

 

[robinho10]

yo u guys ... p21 was tricky!!!!
i wanna know what came in p22!?!?!??!?!?!

can u please tell me the q's??

 

[princess123]

wt came in p21????????