Question

The dimensions of the constant b in the vander waals gas equation are that of

Answer 1

Answer:

The dimensions of 'a' in Vanderwaal's equation (P+V2a)(V−b)=RT is: (V-volume, P-Pressure, R-Universal gas constant, T- Temperature) A .

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Answer 2

Answer: Dimension of b= [$M^{0}$ $L^{3}$ $T^{0}$]

Explanation:

• The Vander waal's equation is $(p+\frac{a} {V^{2} })(V-b)=RT$
• We can only add and subtract quantities if they have the same dimensions so dimension of b will be same as dimension of V.
• So, we know the dimension of volume is $L^{3}$.
• Hence, the dimension of b in the above equation is   $L^{3}$.

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