First slide

Rms speed

Question

At what temperature, rms velocity of $O_{2}$ molecules will be $\frac{1}{3} of t h a t o f H_{2} molecules at - 3^{0} C$ ?

Very Easy

A

90 K
B

$1167^{0} C$
C

$- 3^{0} C$
D

$207^{0} C$

Solution

${(C_{o_{2}})}_{t} = \frac{1}{3} {(C_{H_{2}})}_{- 3}$
$\sqrt{\frac{273 + t}{32}} = \frac{1}{3} \sqrt{\frac{273 - 3}{2}}$
or $\frac{273 + t}{32} = \frac{1}{9} \times \frac{270}{2}$
or 273+t = $\frac{270 \times 32}{18}$
or t = 480 - 273 = $207^{0} C$

Get Instant Solutions

When in doubt download our app. Now available Google Play Store- Doubts App

Recieve an sms with download link

Doubts App

OR

SCAN ME

Doubts App

Doubts App