Question

It is observed that $\mathrm { H } _ { 2 }$ and He gases always show positive deviation from ideal behavior i.e., z > 1. This is because.

• A. The value of a is very large due to high attractive forces
• B. The weak intermolecular forces of attraction due to which a is very small and $a / v ^ { 2 }$ is negligible
• C. The value of b is very large due to large size of the molecules
• D. Both a and b are very and proportional to

Answer 1

Answer: (B)

The weak intermolecular forces of attraction due to which a is very small and $a / v ^ { 2 }$ is negligible

Answer 2

: Due to weak intermolecular forces of attraction, $\mathrm { H } _ { 2 }$and He gases show the value of Z > 1.