• We need your support!

    We are currently struggling to cover the operational costs of Xtremepapers, as a result we might have to shut this website down. Please donate if we have helped you and help make a difference in other students' lives!
    Click here to Donate Now (View Announcement)

GT for Chemistry paper 22 AS.

Messages
102
Reaction score
38
Points
38
Yeah I remember now. There was a triol after G was reduced by NaBH4.
so did u made the whole displayed structure or just the condensed structure of that triol and the part after it in which we had to reduce G ?
will i get marx for the q.3 boxes in which i drew the whole structure or will i loose all 6 marx. i made the whole structures showing every bond rather than the condensed formula.
was it written in bold words to make the condensed formula and not the displayed formula?
 

aom

Messages
68
Reaction score
12
Points
18
I am expecting 33 in p12, 47 in p22 and 21 in p33. What grade should I expect?
me the same marks expected exactly..... except for paper 33 i would get 25 or 26 .... so i think it is an A.... and don't listen to those who say the gt will be abovve 50 it will be around 45......... Good Luck :)
 
Messages
121
Reaction score
32
Points
38
No, it wasn't written in bold words to write the structural formula. But someone here in this thread had assured that displayed formulae will be accepted as indicated by past mark schemes. So, yeah, you have no reason to worry about that.
 
Messages
102
Reaction score
38
Points
38
ur statement relieved me cux all of my friends were saying that i will loose all the 6 marx.
 
Messages
99
Reaction score
23
Points
8
Still can't be sure bro, coz the STRUCTURAL was in bold. I mean why would they stress on that if displayed is acceptable? Anyway, Im dead sure you won't lose
all the 6. :)
 
Messages
102
Reaction score
38
Points
38
even if they cancel 1 or 2 marx it wont matter cux still i will get more than 52 out of 60. but if they cancel more than 3 then it wont be a good sign for me
 
Messages
31
Reaction score
13
Points
18
What if i get U in both paper 5 nd paper 3 and A in the rest of the components???? Will i still be graded if i fail in 2 components?
 
Messages
105
Reaction score
34
Points
38
I got CHO as the empirical formula and suspect that it is wrong!:p
What was the empirical formula?
In Q5 what functional group was present in G?
And what was the enthalpy change?Mine was -129 kJ/mol.
The emperical formula for sure was C6H8O7 because the relative number of moles ratio was 1:1.33:1.16 and kept on multiplying by the numbers till 6 and the ratio came as 6:7.99:7.02 which could be rounded off better than other numbers to give an accurate answer
the functional groups were alcohol and ketone . the structural formula of the compound was HOH2CCOCH2OH
 
Messages
719
Reaction score
2,644
Points
253
there was no chlorine mentioned in the question. :p
only which element burns with a colored flame, and the possible answers were. sodium (yellow), phosphorous (blue), sulfur (yellow)
They asked which element burns with a colored flame in chlorine

Next time read the question properly ok?
:cool:
 
Messages
166
Reaction score
15
Points
28
35 in P12, 53 in P22 and 16 in P33.........Will these marks in chemistry fetch me an A in AS?
 
Messages
99
Reaction score
23
Points
8
Did they ask "burns with coloured flame IN chlorine" or did they ask about the chloride of the element burning with a coloured flame?
 
Messages
242
Reaction score
99
Points
53
it was definitely which element burns in a coloured flame, and as far as im concerned an element when it burns only emmits ONE spectral type meaning only a single wavelength of light so weather it was chlorine or oxygen or even dinitrogen pentoxide or even phosphine......................sodium always burns with yellow flame, this is a test for sodium.................When u react sodium with chlorine or oxygen it isnt spontaneous..uhave to light to sodium to fire, then it "burns in yellow flames and reacts" no matter what the gas is............
 
Top