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The critical pressure P(C) and critical ...

The critical pressure `P_(C)` and critical temperature `T_(C)` for a gas obeying van der Waal's equation are 80 atm at `87^(@)`C. molar mass of the gas is 130 g/mole. The compressibility factor for the above gas will be smaller than unity under the following condition:

A

1 atm and `800^(@)`C

B

1 atm and `1200^(@)`C

C

1 atm and `1000^(@)`C

D

1 atm and `1100^(@)`C

Text Solution

Verified by Experts

The correct Answer is:
A
`T_(C) = 87^(@)C` ,
`T_(B) = (27)/(8) xx 360 = 1215K or 942^(@)C` Hence `Z lt 1 " at" T lt 942^(@)C`
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