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  • At a certain temperature, only 50% HI is dissociated into H2 and I2 at equilibrium.The equilibrium constant is :Option: 1 <stro

At a certain temperature, only 50% HI is dissociated into H2 and I2 at equilibrium.The equilibrium constant is :

Option: 1

1.0


Option: 2

3.0


Option: 3

0.5


Option: 4

0.25


Answers (1)

best_answer

 For the reaction

\mathrm{2HI\rightleftharpoons H_{2}+I_{2}}

Given that 50% of HI is dissociated i.e

\mathrm{2HI\rightleftharpoons H_{2}+I_{2}}

1-0.5      0.25    0.25

\mathrm{K_{C}=\frac{0.25\times0.25}{0.5\times0.5}=0.25}

Hence, the correct answer is Option (4)

Posted by

Anam Khan

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