9701_w16_qp_42 :D EASIEST :P

[Maryum7]

i got F as (CH3)3CCOOH

I got (CH3)3CH2COOH ._.

 

[Maryum7]

i really hated how they did NOT put stress to electrochem and polymerization and DNA stuff.
i feel too many questions on hydrolysis of amides and way too many new questions compared to previous papers.
i really hope the A* treshold is below 190/260 or else im screwed

Ikr DNA stuff is good you can score easily there

 

[madhavmk]

I got (CH3)3CH2COOH ._.

whoops yeah thats what i meant.
its a skeletal diagram .the H's dont matter

 

[Maryum7]

whoops yeah thats what i meant.
its a skeletal diagram .the H's dont matter

Thank God
Hey and for one of the organic chem questions, what was the ppt and why was it insoluble? :/

 

[madhavmk]

Ikr DNA stuff is good you can score easily there

yeah i just memorized all that replication and structure n shit.
its easy just memorize and vomit on the paper

 

[madhavmk]

Thank God
Hey and for one of the organic chem questions, what was the ppt and why was it insoluble? :/

the br-benzene-cooh group i think
i dunno but in known the nh3-ch2-ch3 group is soluble due to h bonding

 

[madhavmk]

did any of u find a time shortage and leave some questions blank?
i left almost 6 marks empty thinking that i would have time to come back to it later
i left that h formation and Cu percentage in brass halfways

 

[Maryum7]

did any of u find a time shortage and leave some questions blank?

I only left two marks blank, the solvent used for NMR, and why the ppt is insolube. the rest I may have done wrong but I didnt leave it blank xD

 

[Maryum7]

did any of u find a time shortage and leave some questions blank?

Tell me about the stupid NaN3 question, what were the equations for its decompostion?
And the structure of N3-?
wbu Thought blocker ?

 

[madhavmk]

2NaN3 --> 3N2+2Na
the only way i got to know was becoz questio told it will decompose to its elements
igot the n3- ion question wrong.
according to wikipedia

 

[Thought blocker]

I got (CH3)3CH2COOH ._.

whoops yeah thats what i meant.
its a skeletal diagram .the H's dont matter

Is that structure even possible?

 

[Thought blocker]

2NaN3 --> 3N2+2Na
the only way i got to know was becoz questio told it will decompose to its elements
igot the n3- ion question wrong.
according to wikipedia

image isnt opening.

 

[Paruna]

i

in what?

The suggest questions! There were too many suggest questions

 

[madhavmk]

Is that structure even possible?

 

[madhavmk]

 

[Thought blocker]

View attachment 61391

Thats what. (CH3)3CCOOH

 

[zeejay]

What did u guys write for the ppt one in the second last question?..... my structure was 4 bromobenzoic acid (which we had to draw in the box) and reason for insolubilty was because it has two electron withdrawing groups on opposite sides

 

[Thought blocker]

What did u guys write for the ppt one in the second last question?..... my structure was 4 bromobenzoic acid (which we had to draw in the box) and reason for insolubilty was because it has two electron withdrawing groups on opposite sides

(Y)

 

[thandazani]

i also wonder why they did not put electrochem..Maybe its in paper 5,bear that in mind.......!!!!

 

[Thought blocker]

i also wonder why they did not put electrochem..Maybe its in paper 5,bear that in mind.......!!!!

Rates of reactions probablity is there as well xD