# and are specific heats at constant pressure and constant volume respectively. It is observed that  for hydrogen gas  for nitrogen gasThe correct relation between a and b is : Option 1) Option 2) Option 3) Option 4)

As we learnt in

Specific heat capacity at constant pressure -

- wherein

f = degree of freedom

R= Universal gas constant

Cp - Cv = a       (for hydrogen gas)

Cp - Cv = b        (for nitrogen gas)

Cp - Cv = R       ( Cp  & Cv   is molar specific heat)

If we convert molar specific heat to specific heat

a = 14 b

Since mass of 1 mole of H2 = 2 g/mole

mass of 1 mole of N2 = 28 gm/mole

Correct option is 3.

Option 1)

This is an incorrect option.

Option 2)

This is an incorrect option.

Option 3)

This is the correct option.

Option 4)

This is an incorrect option.

### Preparation Products

##### Knockout JEE Main April 2021

An exhaustive E-learning program for the complete preparation of JEE Main..

₹ 22999/- ₹ 14999/-
##### Knockout JEE Main April 2022

An exhaustive E-learning program for the complete preparation of JEE Main..

₹ 34999/- ₹ 24999/-
##### Test Series JEE Main April 2021

Take chapter-wise, subject-wise and Complete syllabus mock tests and get in depth analysis of your test..

₹ 6999/- ₹ 4999/-
##### JEE Main Rank Booster 2021

This course will help student to be better prepared and study in the right direction for JEE Main..

₹ 13999/- ₹ 9999/-