Chemistry: Post your doubts here!

[awesomaholic101]

Ohho.... congo...

you asked me to do the paper now you'll have to answer my questions that i will be asking in a while

 

[The Sarcastic Retard]

you asked me to do the paper now you'll have to answer my questions that i will be asking in a while

Sure dear.

 

[awesomaholic101]

Sure dear.

actually tomorrow ... imma sleep now

 

[The Sarcastic Retard]

actually tomorrow ... imma sleep now

U can post ur questions, I will give solutions (that i know), u check tomorrow.

 

[MafaldaC]

Its D. 1 carbon and 5th one.

but why?

 

[The Sarcastic Retard]

but why?

lone pair on N will attack on 5th bromine.

 

[chocolatelover]

Can someone solve this?

 

[awesomaholic101]

View attachment 57486
Can someone solve this?

Is the answer A?
5/15*12 + 10/15*6 = 8 kPa

 

[awesomaholic101]

U can post ur questions, I will give solutions (that i know), u check tomorrow.

thank you ... i figured out my mistakes
anyway about the uses of different molecules and why it can be used for that purpose ... do you have a list or sth?

 

[awesomaholic101]

12/o/n/13 - where is nucleophilic addition happening?

 

[ahmed butt]

How to solve Q29?
http://papers.gceguide.com/A Levels/Chemistry (9701)/9701_w14_qp_13.pdf
http://papers.gceguide.com/A Levels/Chemistry (9701)/9701_w14_ms_13.pdf

 

[darks]

Same goes for pressure right? Increasing pressure increases both forward and backward rate?

yes

 

[darks]

pls help

 

[donewithtime80]

http://studyguide.pk/Past Papers/CIE/International A And AS Level/9701 - Chemistry/9701_w06_qp_1.pdf

q:37 please
Answer is D

 

[donewithtime80]

why not SO4 2- is high?

 

[donewithtime80]

27 Which compound • is unaffected by hot alkaline potassium manganate(VII); • gives hydrogen when treated with sodium?

A (CH3)2CHCOCH3
B (CH3)3COH
C CH3CH2CH(OH)CH3
D CH3CO2CH(CH3)2

right answer is B ... but why not C? how is C affected bby KMnO4?

 

[donewithtime80]

how to go about questions like these?

 

[The Sarcastic Retard]

thank you ... i figured out my mistakes
anyway about the uses of different molecules and why it can be used for that purpose ... do you have a list or sth?

Which question are u talking about?

 

[The Sarcastic Retard]

12/o/n/13 - where is nucleophilic addition happening?

OH is a nucleophile, it will attack on aldehyde. You can compare reaction with HCN

 

[The Sarcastic Retard]

How to solve Q29?
http://papers.gceguide.com/A Levels/Chemistry (9701)/9701_w14_qp_13.pdf
http://papers.gceguide.com/A Levels/Chemistry (9701)/9701_w14_ms_13.pdf

For carbon atoms in plain, u have to see that connecting carbon is Sp2 hybridised, but all are Sp3 X is wrong.
For Y, You can clearly see, there is no possiblity of cis trans isomer there.