Question

The most probable speed of 8gm of h2 is 200m/s average kinetic energy of h2 gas is

Answer 1

Answer:

The average kinetic energy is 240 J.

Explanation:

Given that,

Speed = 200 m/s

Weight of H₂ = 8 gm

We need to calculate the value of RT

Using formula of speed

$v=\sqrt{\dfrac{2\times R\times T}{\mu}}$

Put the value into the formula

$200=\sqrt{\dfrac{2\times R\times T}{2\times10^{-3}}}$

$RT=\dfrac{(200)^2\times2\times10^{-3}}{2}$

$RT=40$

We need to calculate the average kinetic energy

Using formula of kinetic energy

$K.E=\dfrac{3}{2}nRT$

$K.E=\dfrac{3}{2}\times\dfrac{8}{2}\times40$

$K.E=240\ J$

Hence, The average kinetic energy is 240 J.