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1 mole of H(2) gas is contained in box o...

1 mole of `H_(2)` gas is contained in box of volume `V= 1.00 m^(3) at T = 300 K`. The gas is heated to a temperature of T = 3000 K and the gas gets converted to a gas of hydrogen atoms. The final pressure would be (considering all gases to be ideal)

A

same as the pressure initially

B

2 times the pressure initially

C

10 times the pressure initially

D

20 times the pressure initially

Text Solution

Verified by Experts

The correct Answer is:
D

Accoding to gas equation,
PV= nRT
`or (P_(2)V_(2))/(T_(2))=(P_(1)V_(1))/(T_(1))or (P_(2))/(P_(1))=(V_(1))/(V_(2)).(T_(2))/(T_(1))`
Here, `T_(2)=3000 K,T_(1)=300K`
Since `H_(2)` splits into hydrogen atoms, therefore volume become half i.e., `V_(2)1/2V_(1)`
`(P_(2))/(P_(1))=(V_(1))/(1/2V_(1))xx(3000)/(300)or (P_(2))/(P_(1))=20`
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