The most probable speed of `8g` of `H_(2)` is `200 ms^(-1)`. Average kinetic energy (neglect rotational and vibrational energy) of `H_(2)` gas is :

Options

A. `480 J`
B. `240 J`
C. `120 J`
D. `360 J`

Answer

B

Explanation

`200 = sqrt((2RT)/(2))= RT = 40000`,
Average `K.E. = (3)/(2)nRT= (3)/(2)xx (8)/(2)xx 40000= = 240000J= 240 kJ`.