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Characteristics of Equilibrium Constant

H2+I2 ⇌ 2HIDe...

Question

$H_{2} + I_{2} ⇌ 2 H I$
Determine the equilibrium constant if
(a) concentration of $H_{2}, I_{2}$ and $H I$ at equilibrium are $8.0, 3.0$ and $28.0$ mol/lit. respectively.
(b) amount of $H_{2}, I_{2}$ and $H I$ at equilibrium are $0.2, 9.2525$ and $44.8$ gram respectively.

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Solution

for A $K = \frac{28 \times 28}{8 \times 3}$ = 32.66

for B $K = \frac{44.8 \times 44.8}{0.2 \times 9.25}$ = 1084.88

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