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Introduction

The equilibri...

Question

The equilibrium constant for the reaction $C O (g) + H_{2} O (g) ⇌ C O_{2} (g) + H_{2} (g)$ is 5. How many moles of $C O_{2}$ must be added to 1 litre container already containing 3 moles each of CO and $H_{2} O$ to make 2 M equilibrium concentration of CO?

A

15

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B

19

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C

5

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D

20

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Solution

The correct option is A 19
$C O$ $+ H_{1} O$ $⇌$
$C O_{2}$ $+ H_{2}$
initial conc. $3$ $3$ $x$ $0$
At eqm $2$ $2$ $(x + 1)$ $1$
$5 = \frac{(x + 1)}{4} = 20 = x + 1$
$\Rightarrow x = 19$

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Similar questions

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