The ratio of vapour densities of two gases at the same temperature is 25 4 , then the ratio of r.m.s. velocities will be:

(Vapor density) = ( 2 Molar mass ) , I.e, v d = 2 M v rms = M 3 RT v 1 v 2 = M 2 M 1 = 4 25 = 2 5

Start Free Mock LoginAlready registered? Login here

Physics - Heat & Thermo Question with Solution | TestHub

PhysicsHeat & ThermoKTGEasy2 minQB

PhysicsEasysingle choice

The ratio of vapour densities of two gases at the same temperature is $\frac{4}{25}$ , then the ratio of r.m.s. velocities will be:

Options:

Answer:

Solution:

(Vapor density) $= (\frac{Molar mass}{2})$ , I.e, $v d = \frac{M}{2}$ $v_{rms} = \frac{3 RT}{M} \frac{v _{2}}{v _{1}} = \frac{M _{1}}{M _{2}} = \frac{25}{4} = \frac{5}{2}$

Stream:JEESubject:PhysicsTopic:Heat & ThermoSubtopic:KTG

⏱ 2mℹ️ Source: QB

Doubts & Discussion

Loading discussions...