4.5 moles each of hydrogen and iodine is heated in a sealed ten l… - Vidyadip

MCQ

$4.5$ moles each of hydrogen and iodine is heated in a sealed ten litre vessel. At equilibrium, $3$ moles of HI were found. The equilibrium constant for $H _2( g )+ I _2( g ) \rightleftharpoons 2 HI ( g )$ is .......

✓
$1$
B
$2$
C
$3$
D
$4$

✓

Answer

Correct option: A.

$1$

a
$H _{2( g )}+ I _{2( g )} \rightleftharpoons 2 HI _{( g )}$

$K _{ c }=\frac{[ HI ]^2}{\left[ H _2\right]\left[ I _2\right]}=\frac{(3)^2}{3 \times 3}=\frac{9}{9}=1$

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