If the R.M.S. speed of oxygen molecules at 0 ° C is 160 m s - 1 . Find the R.M.S. speed of hydrogen molecules at 0 ° C .

Question

If the R.M.S. speed of oxygen molecules at 0 ° C is 160 m s - 1 . Find the R.M.S. speed of hydrogen molecules at 0 ° C ., 40 m s - 1, 80 m s - 1, 640 m s - 1, 332 m s - 1

MARKS App · Accepted Answer

Recall the formula of root mean square speed, v R M S = 3 R T M , ⇒ v R M S O 2 v R M S H 2 = M H 2 M O 2 = 2 32 = 1 4 ⇒ v RMS H 2 = 4 v RMS O 2 = 4 × 160 = 640 m s - 1

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