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ALL CIE CHEMISTRY DOUBTS HERE !!

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Amii:

--- Quote from: Ari Ben Canaan on February 04, 2011, 11:00:59 am ---Questions 23,26,29 and 30

--- End quote ---
Not AT ALL sure

30) B - Butan-2-ol
On hydration can form But-1-ene,trans-but-2-ene and cis-but-2-ene (3 alkenes)

Butan-1-ol will form only But-1-ene(1 alkene)

2-methylpropan-1-ol and 2-methylpropan-2-ol will form 2-methylpropene (1 akene)I guess  :-\




  

Amii:

--- Quote from: Ari Ben Canaan on February 04, 2011, 02:20:52 pm ---Stupid me.

And the rest, please ?

--- End quote ---
I don't take CIE. I called my tuition teacher but she was busy.

So if possible I wil check those rest questions with her later.

elemis:
For question 3 (a) (ii) why is it +22 KJ/mol ??

Shouldnt it be 410*4 +151 + (-299-3*410-299) ??

There are 4 C-H bonds broken but the MS pretends only one is broken.


 

Amelia:
^ It's not pretending.

CH4 + I2 --> CH3I + HI

Only one C-H bond is broken to form H-I.

The rest are still intact -> CH3I

elemis:
I've identified the chiral centres by drawing a red square next to them.

Am I correct ?

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