Question

Which of the following represents the increasing order of boiling points of (a), (b) and

(c)?

(a) CH3-CH2-CH2-CH2-OH (b) (CH3)2CHOCH3 (c) (CH3)3COH

(1) (a) < (b) < (c) (2) (b) < (a) < (c)

(3) (c) < (b) < (a) (4) (b) < (c) < (a)​

Answer 1

Answer:

option (3)

Explanation:

As branching in alcohol increases, it's boiling point decreases.

Answer 2

Explanation:

As we know that -

The B.P of alcohol and phenols increase with increase in number of C-atoms.

Here, All 3 compounds have same molecular mass. So, we can't check B.P by using this.

Another, In Alcohol B.P decreases with increase of branching in C-chain.

Compound A has no branch. It means, Compound A has more B.P

And Compound C has Branch. So, it's low boiling point as compare to Compound A.

And we know that, B.P of alcohol are usually higher in comparison to ether. Compound B is ether. So, Compound B has low boiling point as compared to Compound A & C.

Hence,

a > c > b

Therefore,

Option D is correct.