(P+aV2)(V−b)=RT\left(\mathrm{P}+\frac{\mathrm{a}}{\mathrm{V}^{2}}\right)(\mathrm{V}-\mathrm{b})=\mathrm{RT}(P+V2a)(V−b)=RT
(P+2a2 V2)(V′−2 b)=3RT\left(\mathrm{P}+\frac{2 \mathrm{a}^{2}}{\mathrm{~V}^{2}}\right)\left(\mathrm{V}^{\prime}-2 \mathrm{~b}\right)=3 \mathrm{RT}(P+ V22a2)(V′−2 b)=3RT
(P+4aV2)(V−2 b)=2RT\left(\mathrm{P}+\frac{4 \mathrm{a}}{\mathrm{V}^{2}}\right)(\mathrm{V}-2 \mathrm{~b})=2 \mathrm{RT}(P+V24a)(V−2 b)=2RT
(P+2aV2)(V+2 b)=2RT\left(\mathrm{P}+\frac{2 \mathrm{a}}{\mathrm{V}^{2}}\right)(\mathrm{V}+2 \mathrm{~b})=2 \mathrm{RT}(P+V22a)(V+2 b)=2RT
