WTF CHEMISTRY PAPER 42 IS SO HARD

[princessnoor]

How did bio 42 go?

 

[Yemal Malaka Bandara]

I dont do bio... But how did it go?

 

[princessnoor]

Not very good but i hope gt is low iA

 

[Distillator]

Amide+ Acohol (insoluble in both)
Amine+ Carboxylic acid ( soluble in both )
Amine+Ester ( Solubile in HCl and Insoluble in NaOH)
Amide+ Phenol ( Insoluble in HCl and soluble in NaOH) am i right guys

 

[Omar Haider]

That's what I put.

Amide+ Acohol (insoluble in both)
Amine+ Carboxylic acid ( soluble in both )
Amine+Ester ( Solubile in HCl and Insoluble in NaOH)
Amide+ Phenol ( Insoluble in HCl and soluble in NaOH) am i right guys

 

[Aly Emran]

Amide+ Acohol (insoluble in both)
Amine+ Carboxylic acid ( soluble in both )
Amine+Ester ( Solubile in HCl and Insoluble in NaOH)
Amide+ Phenol ( Insoluble in HCl and soluble in NaOH) am i right guys

Cant there be any other possibilities?
This qstn was tough.... I wrote randomly
I guess out of 4, 2 of my boxes are correct
Plus if we make the group according to the boxes and they fit in this molecular formula(C8H9NO2) will I get ecf marks for the structures according to the wrong groups i mention in the boxes?-feeling worried

 

[Distillator]

Cant there be any other possibilities?
This qstn was tough.... I wrote randomly
I guess out of 4, 2 of my boxes are correct
Plus if we make the group according to the boxes and they fit in this molecular formula(C8H9NO2) will I get ecf marks for the structures according to the wrong groups i mention in the boxes?-feeling worried

You'll most probably get marks if you wrote the correct functional groups not bothering about the molecular formula. or let's you say you don't get a mark for that.. you'll still get an ECF for drawing the structures according to your own functional groups. Of course provided they match the molecular formula . it's very likely to have ecf option here

 

[Aly Emran]

You'll most probably get marks if you wrote the correct functional groups not bothering about the molecular formula. or let's you say you don't get a mark for that.. you'll still get am ECF for drawing the structures according to your own functional groups

Wow... Thats saves a lot if it actually happens.... Cox i think two boxes of functional groups are correct and three of my structures obeyed the groups and the molecular formula. I guess i'll get 4marks at least... In Shaa Allah...
Plus what u wrote in the blanks where he asked which functional grp will react with cold HCl and cold NaOH? (Not the Boxes)

 

[hamzashariq]

Amide+ Acohol (insoluble in both)
Amine+ Carboxylic acid ( soluble in both )
Amine+Ester ( Solubile in HCl and Insoluble in NaOH)
Amide+ Phenol ( Insoluble in HCl and soluble in NaOH) am i right guys

you're contradicting yourself. First you say amide is insoluble in both, then you say amide is soluble in NaOH...

 

[Princess Raven]

No amide is insoluble in both but phenol is present and it's soluble in NaOH so the overall compound will be soluble in NaOH

you're contradicting yourself. First you say amide is insoluble in both, then you say amide is soluble in NaOH...

 

[Distillator]

you're contradicting yourself. First you say amide is insoluble in both, then you say amide is soluble in NaOH...

No I'm not. Amide is neutral in nature that doesn't react with either NaOH or HCl. But considering phenols acid nature it will react with NaOH.

 

[Afzal Rahman]

Yeah it's was 33p-

Isn't it supposed to be 33P+? Im sure I remember seeing that it had an electron less than proton..

 

[Princess Raven]

Isn't it supposed to be 33P+? Im sure I remember seeing that it had an electron less than proton..

I think it was 15 proton 16 electrons and 18 neutrons
If I rmr correctly

 

[Aly Emran]

Distillator
Dude for insoluble in NaOH, all i wrote is alcohol

 

[Distillator]

What was the NMR compound ? I got C(CH3)3CH2OH

 

[Aly Emran]

What was the NMR compound ? I got C(CH3)3CH2OH

100% correct

 

[Distillator]

Wow... Thats saves a lot if it actually happens.... Cox i think two boxes of functional groups are correct and three of my structures obeyed the groups and the molecular formula. I guess i'll get 4marks at least... In Shaa Allah...
Plus what u wrote in the blanks where he asked which functional grp will react with cold HCl and cold NaOH? (Not the Boxes)

With HCl amine reacts
with NaOH Phenol and Carboxylic Acid reacts .

 

[anonymous1122]

With HCl amine reacts
with NaOH Phenol and Carboxylic Acid reacts .

I think you are getting 100/100 mate!

 

[Aly Emran]

With HCl amine reacts
with NaOH Phenol and Carboxylic Acid reacts .

I wrote phenol in naoh but i cant remember if i wrote amide or amine in hcl...

 

[Yemal Malaka Bandara]

Amide+ Acohol (insoluble in both)
Amine+ Carboxylic acid ( soluble in both )
Amine+Ester ( Solubile in HCl and Insoluble in NaOH)
Amide+ Phenol ( Insoluble in HCl and soluble in NaOH) am i right guys

gg for me... I screwed up this question! I cant even remember what i wrote..