Question

Arrange the following compounds in the increasing order
of their densities.
(a) (i) < (ii) < (iii) < (iv) (b) (i) < (iii) < (iv) < (ii)
(c) (iv) < (iii) < (ii) < (i) (d) (ii) < (iv) < (iii) < (i)

Answer 1

Answer:

Arrange the following compounds in the increasing order

of their densities.

(a) (i) < (ii) < (iii) < (iv)

(b) (i) < (iii) < (iv) < (ii)

(c) (iv) < (iii) < (ii) < (i)

(d) (ii) < (iv) < (iii) < (i)

Answer 2

The correct option is (i) < (ii) < (iii) < (iv)

Explanation:

• The density is defined as the mass per unit volume.

• This density of the compound depends on several factors like

• A. Molar mass.

• B. Any interaction between the molecules of compound.

• Here among the compounds given, they are benzene, chlorobenzene, dichloro benzene and bromochloro benzene.

• As these compounds have no special type of attraction like hydrogen bond between them, so molar mass is the only factor between them.

• So according to molar mass, the trend is (i) < (ii) < (iii) < (iv).

• So, the trend of the densities are (i) < (ii) < (iii) < (iv)

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An organic compound on analysis gave the following % composition C- 57.8%, H-3.6% and the rest is oxygen. The vapour density of compound was 83. Find empirical formula and molecular formula of the compound.