NEET | 2016Mole ConceptEasy

Question

Equal moles of hydrogen and oxygen gases are placed in a container with a pin-hole through which both can escape. What fraction of the oxygen escape in the time required for one-half of the hydrogen to escape?

Options

A.

1/8

B.

1/4

C.

3/8

D.

1/2

Solution

n1t1n2t2=M2M1⇒n2=12,  = n1 = n'
⇒2t2n't1x1=M2M1=232=116=14
Assuming t2 = t1
2n ' t2t1=14
∴ n' = 18

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