CCEA Assessment Unit A2 3A June 02 Watch

pauljh
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Preparation of 1,3-dinitrobenzene? relevant equations,calculation to show how muc nitrobezene is required(assuming 90% yield),procedure and separtion/purification of solid?

plan how you could prepare 25g of pure 1,3-dinitrobenzene.
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charco
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(Original post by pauljh)
Preparation of 1,3-dinitrobenzene? relevant equations,calculation to show how muc nitrobezene is required(assuming 90% yield),procedure and separtion/purification of solid?

plan how you could prepare 25g of pure 1,3-dinitrobenzene.
very good - and your problem is...?
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pauljh
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you are provided with: nitrobenzene, conc nitric acid, conc sulphuric acid, ethanol and water

(A)relevant equations,
(B)calculation to show how muc nitrobezene is required(assuming 90% yield),(C)procedure, including safety procedures
(D) separtion/purification of solid?

plan how you could prepare 25g of pure 1,3-dinitrobenzene


*need a hand with these Q's!
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charco
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(Original post by pauljh)
you are provided with: nitrobenzene, conc nitric acid, conc sulphuric acid, ethanol and water

(A)relevant equations,
(B)calculation to show how muc nitrobezene is required(assuming 90% yield),(C)procedure, including safety procedures
(D) separtion/purification of solid?

plan how you could prepare 25g of pure 1,3-dinitrobenzene


*need a hand with these Q's!
You must be more specific. What exactly is the problem?
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pauljh
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those are the Q's i need to do (a)-(d) .. need help with them..thanks!
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charco
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(Original post by pauljh)
those are the Q's i need to do (a)-(d) .. need help with them..thanks!
OK, take question A)

Have you looked up the equation for the reaction between benzene and a nitrating agent?

Have you heard of books?

Have you heard of Google?
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pauljh
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thats why i'm here. have tried those and no luck!
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charco
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(Original post by pauljh)
thats why i'm here. have tried those and no luck!
:eek:
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pauljh
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well sorry for asking for a hand!
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charco
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(Original post by pauljh)
well sorry for asking for a hand!
If you were asking for a hand I'm sure somebody would oblige.

However, you are asking for someone to do all of your homework for you 'cos you can't be ars*d...

... and you are quite prepared to lie about your own input in the process.

You'll get nothing from me.

:getmecoat:
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