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Two gases bulbs A and B are connected b...

Two gases bulbs `A` and `B` are connected by a tube having a stopcock. Bulb `A` has a volume of `100 mL` and contains `H_(2)` gas . After opening the gas from `A` to the evacuated bulb `B` , the pressure falls down by `40%`. The volume `(mL) of `B` must be

A

75

B

150

C

125

D

200

Text Solution

Verified by Experts

The correct Answer is:
B
`P_(1)V_(1) (A) + P_(2)V_(2) (B) = P_(R) (V_(1) + V_(2))`
`100 xx 100 + 0 xx V_(2) = 40 (100 + V_(2))`
`V_(2) = 250 - 100 = 150 mL`
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