The equation of state of some gases can be expressed as (P+aV2)(V−b)=RT. Here P is the pressure, V is the volume, T is the absolute temperature and a,b,R are constant. The dimensions of a are:
M0L6T0
ML5T−2
ML−1T−2
M0L3T0
A
ML5T−2
B
M0L3T0
C
ML−1T−2
D
M0L6T0
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Solution
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Dimension, aV2 is the same as pressure dimension is Nm−2
aV2=a(m3)2=Nm−2
a=Nm4=[ML1T−2][MoL4To]=[ML5T−2]
Hence, unit of a is [ML5T−2]
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