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Q.

The equilibrium constant for the reaction H2(g)+I2(g)2HI(g)is 2 at a certain temperature .The equilibrium concentrations of H2 and HI are 2 mole .lit-1.The equilibrium concentrations of (in mole.lit-1) of I2?

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a

16

b

4

c

8

d

1

answer is D.

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Detailed Solution

The chemical equilibrium reactions is

H2(g)+I2(g)2HI(g)

Equilibrium constant KC=2

At equilibrium,

Concentration of HI, HI=2 mole.lit-1

Concentration of H2,H2=2 mole.lit-1

KC=HI2H2I2

I2=HI2H2KC=2×22×2

I2equilibrium=1.

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The equilibrium constant for the reaction H2(g)+I2(g)⇔2HI(g)is 2 at a certain temperature .The equilibrium concentrations of H2 and HI are 2 mole .lit-1.The equilibrium concentrations of (in mole.lit-1) of I2?