Question

The molecules of a gas have rms velocity 200 m/s at 27°C. Find rms velocity at 127°C if pressure is constant.

• A. (400)/(\sqrt3)
• B. 100\sqrt2
• C. (100\sqrt2)/(3)
• D. (100)/(3)

Hint:

Always convert °C to Kelvin.

Answer 1

The Correct Option is A

Step 1: rms velocity relation.
v√T
Step 2: Calculation.
v₂=200√((400)/(300))=(400)/(\sqrt3)