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Introduction to Alkenes

Write the str...

Question

Write the structures of alkenes obtained on dehydration of :
propan - 1 - ol
propan - 2 - ol
2- methylpropan -1 -ol
2- methylpropan -2 -ol

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Solution

$C H_{3} C H_{2} C H_{2} - O H d e h y d r a t i o n - -------- \to C H_{3} C H = C H_{2}$
$C H_{3} - C H | O H - C H_{3} d e h y d r a t i o n - -------- \to C H_{3} - C H = C H_{2}$
$H_{3} C - C H | C H_{3} - C H_{2} O H d e h y d r a t i o n - -------- \to C H_{3} - C | C H_{3} = C H_{2}$
$H_{3} C - O H | C | C H_{3} - C H_{3} d e h y d r a t i o n - -------- \to C H_{3} C | C H_{3} = C H_{2}$

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Similar questions

Q. The relative order of ease of dehydration of the following alcohols is:
2-Methylpropan-2-ol>Propan-2-ol>Propan-1-ol

Q. How will you distinguish between the following pairs? Write chemical reactions.

C H_{3} O H

C_{2} H_{5} O H

(ii)Propan-1-ol and propan-2-ol

(iii)Propan-1-ol and 2-methylpropan-2-ol

(iv)Ethanol and propane-1-ol

Q. An alcohol treated with hot conc.

H_{2} {S O}_{4}

. This alkene on ozonolysus given single product with molecular formula

C_{2} H_{4} O

. The alcohol is
1) butan-1-ol
2) butan-2-ol
3) 2-methylpropan-1-ol
4) 2, 2-dimethylbutane-1-ol

Q. When propanal reacts with 2-methylpropanal in presence of

N a O H

, four different products are formed. Write the name of the reaction.

Q. How is propanone converted into-

(i) Propan - 2 - ol
(ii) 2 - Methylpropan - 2 - ol?

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