Question

Magnitude of volume change if 30 ml of C6H5OH (g) is
burnt with excess amount of oxygen, is
(1)30ml (2) 60 ml (3) 20 ml (4) 10 ml​

Answer 1

Hey Dear,

◆ Answer -

(1) Change in volume = 30 ml

● Explaination -

Reaction for combustion of C6H5OH is given as -

x C6H50H + 7x O2 --> 6x CO2 + 3x H2O

In this reaction, total change in volume is -

Volume change = volume of products - volume of reactants

Volume change = (6x + 3x) - (x+ 7x)

Volume change = 9x - 8x

Volume change = x ml.

Combustion of x ml of C6H5OH causes volume change of x ml.

Hence, Combustion of 30 ml of C6H5OH causes volume change of 30 ml.

Best luck...