we had to write any one right, just asking, because i dont rem, i think i wrote sulfer as well for this!i wrte phsohrus..bt cut it n wrte Na...whch is right??
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we had to write any one right, just asking, because i dont rem, i think i wrote sulfer as well for this!i wrte phsohrus..bt cut it n wrte Na...whch is right??
wel atleast u will mrks fr da sign!!!Lol yes this is the only paper i remember what ever i wrote because my chem practical sucked and so i had to do this very well. so i checked it like so many times
but you see i still got -127 pffth
I also wrote AlCl3ppl 4 Al and Cl did you'll write AlCl3 or Al2Cl6? I wrote AlCl3
i can see some mistakes hereP22
stuffs i remember!
q1: phosphorus has coloured flame!
observations wer white solid formed and color of chlorine disappears.
all the three were acidic(pH na: 3, and others i dont remember) and i did all of them react(which i know is wrong )
reaction with water, neutralisation?
angle a was smaller bcause it had 2 lone pairs
q2: enthalpy i think i did a silly mistake and i THINK i got -127
reaction kinetics for all the three!
q3: 2 esters were formed
one alkene
one alcohol
and one carboxylic acid
dehydration, oxidation, hydrolysis/hydration
chiral one was easy
cis trans skeletal was easy
q4: 2 ticks for alcohol for oxidising agent (i dnt rem what was it) and Na
1 tick for Nahco3 and ester
1 tick for Carboxylic acid and Na
1 tick for aldehyde and oxidising agent
functional grp was alcohol
no. of moles of hydrogen= 0.05 (LOL i m pretty sure im wrong, i just didnt want to leave the space empty so did some shit and got 0.05)
then it was ketone which doesnt react with fehlings but with 24 DNPH
and there were 2 alcohols and one ketone, so i got C3H6O3
and the last with oxiding agent the primary alc turn into carboxylic acids
the ketone tunrs into sec alcohol with the reducing agent
THATS IT i cant rem 2 or 3 parts in there!
point me out if im wrong or if i left something!
God Bless You All!
urmm like?i can see some mistakes here
Both are correctppl 4 Al and Cl did you'll write AlCl3 or Al2Cl6? I wrote AlCl3
u will get 1 mark, u had to make skeletal formula in which u dont write C and H.....View attachment 10378
Al2Cl6 exists in vapour phase only...and at standard conditions.... AlCl3 prevails.....so i think it was AlCl3 (s).....Guys the reaction of aluminium with chlorine i made AL2CL6 intead of AlCL3 how many marks do u think will be deducted? I personally think the examiner is gona allow this answer too
Guys the reaction of aluminium with chlorine i made AL2CL6 intead of AlCL3 how many marks do u think will be deducted? I personally think the examiner is gona allow this answer too
I think the answer is Na. Na burns yellow in flames. The question asks which element burns I think not which chloride. I did paper 22 by the waywe had to write any one right, just asking, because i dont rem, i think i wrote sulfer as well for this!
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