Chemistry: Post your doubts here!

[Bilal.khan]

http://s21.postimg.org/vl3ml18xy/new_one.jpg
qwertypoiu The Sarcastic Retard can you please help me with this question ...
As far as i know, secondary alcohols when oxidised to ketones donot respond to mild oxidising agents, so i thought it might be a secondary alcohol, but is it wrong? can you pls clarify, the ans is D

The question says that it is unreactive towards mild oxidising agents which mean it can not be a primary or a secondary alcohol as both can be oxidised .
It has to be a tertiary alcohol which is only possible in D

 

[Bilal.khan]

Can someone please tell the names of the gasses and the reagents used for driying them... please

 

[nehaoscar]

Why not A?? Densities are not in the syllabus ?

 

[The Sarcastic Retard]

View attachment 54750
Why not A?? Densities are not in the syllabus ?

MP & BP of Y < Z
Mg has 2+ charge and Na has +1 charge...
Mg needs more heat energy...
Na < Mg

 

[nehaoscar]

N forms 2 bond pairs and 1 lone pairs here right??
Then why 120degrees? wouldn't it be A?

 

[nehaoscar]

MP & BP of Y < Z
Mg has 2+ charge and Na has +1 charge...
Mg needs more heat energy...
Na < Mg

But then Al<Si is also there right? So why not A?

 

[mohhef3]

someone help me out with que 30,28 and 23
http://maxpapers.com/syllabus-materials/chemistry-9701-a-level/attachment/9701_w14_qp_12/
and in que 32 what will differ in my calculations when i see that dot

 

[nehaoscar]

How to do this??

 

[asadalam]

Can someone explain these to me? Metanoia qwertypoiu

 

[nehaoscar]

Isn't it NaOH?

 

[nehaoscar]

How to do??

 

[Mathemagical]

View attachment 54753
Isn't it NaOH?

Chlorine will react with cold NaOH to form hydrogen and sodium chlorate (I).

 

[nehaoscar]

Why is the ratio 3:1 ?? (D)
The major product is the one with the less H-bonds right

 

[nehaoscar]

Why is 3 wrong? If something can form H-bonds then it will mix right?

 

[nehaoscar]

Why would 3 also occur?

 

[asadalam]

View attachment 54757
Why would 3 also occur?

You should give your book a reading once or twice.All of these are more or less simple and factual based.So revise and then see if you can solve for yourself.

 

[mohhef3]

someone help me out with que 30,28 and 23
http://maxpapers.com/syllabus-materials/chemistry-9701-a-level/attachment/9701_w14_qp_12/
and in que 32 what will differ in my calculations when i see that dot

 

[BhaiArshad]

Help.
asadalam
qwertypoiu

 

[qwertypoiu]

http://s21.postimg.org/vl3ml18xy/new_one.jpg
qwertypoiu The Sarcastic Retard can you please help me with this question ...
As far as i know, secondary alcohols when oxidised to ketones donot respond to mild oxidising agents, so i thought it might be a secondary alcohol, but is it wrong? can you pls clarify, the ans is D

Compound X can be dehydrated --> it's an alcohol
Compound X cannot be oxidised ---> it's a tertiary alcohol.
Tertiary alcohol was dehydrated, so the resulting compound must have a double bond connected to a carbon atom that is connected to three other carbon atoms, which is only D.

 

[nehaoscar]

How to do??