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JEE Main levelNumerical answerDifficulty 2 of 3ce183

$N X_{2} O X_{4} (g) 2 NO X_{2} (g)$ is 20\% dissociated at a total pressure of $1.0 atm$ . Find $K_{p}$ in atm, to two decimal places.

Numerical answer type, answer in atm, tolerance 0.01.

Answer: 0.17 atm

K_{p} = 4 α^{2} P / (1 - α^{2}) = 4 (0.04) (1.0) /0.96 = 0.1667 atm

, i.e. 0.17 atm.

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