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For a real gas obeying van der waal's eq...

For a real gas obeying van der waal's equation , graph is plotted between `PV_m` (y- axis) and P (x - axis) where `V_m` is molar volume . Y - intercept the graph is

A

RT

B

`(P + (a)/(V^(2)))`

C

`(RT)/(V - b)`

D

cannot be determined

Text Solution

Verified by Experts

The correct Answer is:
A
`(P + (a)/(V^2)) (V - b) = RT`
or `PV + (a)/(V) - Pb - (ab)/(V^(2)) = RT`
When P = 0 , `V_(M) = V`
`PV_(M) = Pb + RT` ,
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