MCQ
The equilibrium constant for the reaction

${H_2}(g) + {I_2}(g) \rightleftharpoons 2HI(g)$

is $32$ at a given temperature. The equilibrium concentrations of $I_2$ and $HI$ are $0.5 \times 10^{-3}\, M$ and $8 \times 10^{-3}\, M$ respectively. the equilibrium concentration of $H_2$ is

  • A
    $1 \times {10^{ - 3}}\,M$
  • B
    $0.5 \times {10^{ - 3}}\,M$
  • C
    $2 \times {10^{ - 3}}\,M$
  • $4.0 \times {10^{ - 3}}\,M$

Answer

Correct option: D.
$4.0 \times {10^{ - 3}}\,M$
d
${k_c} = \frac{{{{\left[ {HI} \right]}^2}}}{{\left[ {{H_2}} \right]\left[ {{I_2}} \right]}}$

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