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The molecules of which gas have highest speed

This question belongs to General Knowledge Chemistry
Chemistry
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The molecules of which gas have highest speed?

Answer & Solution
Correct Answer: Option A
Among the given gases, hydrogen at −50oC has maximum value of T/M and highest speed.
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2 Comments
Spicy Anil
Spicy Anil 9 years ago
The speed of gas is calculated by a relation.

Root Mean square velocity µ(rms) = (3RT/M).

From this relation we can calculate speed.

Only mass could not be taken into consideration here because temperature is specified.

So after calculation.

Speed of Hydrogen gas = 157380 unit.

Speed of Methane gas = 68385 unit.

Speed of Nitrogen gas = 142356 unit.

Speed of oxygen gas = 46128 unit.
Abdur Rezzak
Abdur Rezzak 10 years ago
Plz say me the explaination
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