Question

Write the structures of alkenes obtained on dehydration of (i) propan-1-ol
(ii) propan-2-ol
(iii) 2-methylpropan-1-ol
(iv) 2-methylpropan-2-ol

Answer 1

(1). Ch3ch=ch2.

(2). Ch3ch=ch2.

(3). Ch3c(ch3)=ch2

(4). Ch3c(ch3)=ch2.

Answer 2

Hey Dear,

● Answers -

(i) Propan-1-ol -

Deydration of propan-1-ol gives prop-1-ene.

CH3-CH2-CH2-OH + ∆ → CH3-CH=CH2

(i) Propan-2-ol -

Deydration of propan-2-ol gives prop-1-ene.

CH3-CH(OH)-CH3 + ∆ → CH3-CH=CH2

(iii) 2-Methylpropan-1-ol -

Dehydration of 2-methylpropan-1-ol gives 2-methylprop-1-ene.

CH3-CH(CH3)-CH2-OH + ∆ → CH3-C(CH3)=CH2

(iv) 2-Methylpropan-2-ol

Dehydration of 2-methylpropan-2-ol gives 2-methylprop-1-ene.

CH3-C(CH3)(OH)-CH3 + ∆ → CH3-C(CH3)=CH2

Hope you understand this.