MCQ
The equilibrium constant for equilibrium is $2H{X_{(g)}}\,\, \rightleftharpoons \,{H_{2(g)}}\, + \,{X_{2(g)}}$ is $1\, \times \,10^{-5}$. What will be the equilibrium concentration of $HX$ if the equilibrium concentrations for $H_2$ and $X_2$ are $1.2\, \times \,10^{-3}\, M$ and $1.2 \times \, 10^{-4}\, M$ respectively
- A$12\,\times \,10^{-4}\,M$
- B$12\,\times \,10^{-3}\,M$
- ✓$12\,\times \,10^{-2}\,M$
- D$12\,\times \,10^{-1}\,M$