2 mole `H_(2)(g)` present in 8L of container. If pressure exerted by gas is 1 bar then mean square speed of molecule will be

Options

A. `1.2xx10^(6)m^(2)//s^(2)`
B. `6xx10^(5)m^(2)//s^(2)`
C. `2xx10^(5)m^(2)//s^(2)`
D. `3xx10^(6)m^(2)//s^(2)`

Answer

B

Explanation

`bar(u^(2))=(3PV)/(Nm)=(3PV)/(n.M)=((3xx10^(5)xx8xx10^(-3))/(2xx2xx10^(-3)))m^(2)//s^(2)`
`=6xx10^(5)m^(2)//s^(2)`