Rms speed of O2 molecule is 200m/s at T=300K and P=3atm. If diameter of molecule is 0.3nm then collision frequency is:
A
2.9×107s−1
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B
2.9×106s−1
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C
2.9×108
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D
2.9×105
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Solution
The correct option is B2.9×107s−1 Collision frequency =√8kTπm.√2πd2NAPRT =√8π×253.30032√2π×9×10−29×6.023×1023×105253×300=722.1425×106 =28.8×106=2.9×107s−1