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JEE Main levelSingle correct optionDifficulty 2 of 3ig131

$N X_{2}$ and $H X_{2}$ are mixed in the mass ratio $14 : 3$ . The ratio of their partial pressures $p_{N X_{2}} : p_{H X_{2}}$ is

A $1 : 3$
B $3 : 1$
C $14 : 3$
D $1 : 1$

Answer: A

Moles:

N X_{2}

= 14/28 = 0.5

,

H X_{2}

= 3/2 = 1.5

. Partial pressures are in the ratio of moles,

0.5 : 1.5 = 1 : 3

.

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