A : At high pressure , the compressibility factor Z is `(1 + (pb)/(RT))` .
R : At high pressure van der Wall's equation is modified as p(V - b) = RT` .

Options

A. If both assertion and reason are true and the reason is correct explanation of the assertion.
B. If both assertion and reason are true but reason is not the correct explanation of the assertion.
C. If assertion is true but reason is false.
D. If the assertion and reason both are false

Answer

A

Explanation

Vander Waal's equation is
`(P+(a)/(V^(2)))(V-b)=RT`
at high pressure `P(V-b)=RTimplies PV-Pb=RT`
`implies (PV)/(RT)=(1+(Pb)/(RT))`
if `(PV)/(RT) = Z,` then `Z=(1+(Pb)/(RT))`.