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JEE Main levelNumerical answerDifficulty 2 of 3rg138

For a van der Waals gas, the ratio of inversion temperature to critical temperature, $T_{i} / T_{c}$ , to two decimals is

Numerical answer type, tolerance 0.01.

Answer: 6.75

T_{i} = 2 a / R b

and

T_{c} = 8 a /27 R b

. So

T_{i} / T_{c} = \frac{2 a / R b}{8 a /27 R b} = \frac{2 \times 27}{8} = \frac{54}{8} = 6.75

.

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