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A 100 mL flask contained H(2) at 200 Tor...

A 100 mL flask contained `H_(2)` at 200 Torr, and a 200 mL flask contained He at 100 Torr. The two flask were then connected so that each gas filled their combined volume. Assuming no change in temperature,total pressure is

A

300 Torr

B

66.66 Torr

C

150 Torr

D

133.33 Torr

Text Solution

Verified by Experts

The correct Answer is:
D
`H_(2) " " n_(1) = (100 xx 200)/(RT) and He n_(2) = (100 xx 200)/(RT)`
After Combing `P xx (V_(1) + V_(2)) = (n_(1) + n_(2)) RT`
`P xx 300 = (400 xx 100)/(RT) xx RT, P = (400)/(3) = 133.33` torr
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