Question

The van der Waals' equation for a real gas is:

• A. $(P+\frac{a}{V^2})(V-b)=nRT$
• B. $(P+\frac{a{n}^2}{V^2})(V-nb)=nRT$
• C. $(P+\frac{a}{V^2})(V+b)=nRT$
• D. $P=\frac{nRT}{(V-nb)}-\frac{n^{2}a}{V^2}$

Answer 1

The correct option is B $(P+\frac{a{n}^2}{V^2})(V-nb)=nRT$

The van der Waals' equation for a real gas is $(P+\frac{a{n}^2}{V^2})(V-nb)=nRT$
Here,
$(P+\frac{a{n}^2}{V^2})$ represents corrected pressure and
$(V-nb)$ represents corrected volume.
The Van der Waals' equation for a real gas accounts for the deviations from ideal behaviour.
'a' and 'b' are Van der Waals' constants.