Q8 / 180 · COMEDK 2015 · Chemistry

Which of the following equations give ionic product of water? I. $\mathrm{NH}_{3}(a q)+\mathrm{H}_{2} \mathrm{O} \rightleftharpoons \mathrm{NH}_{4}^{+}(a q)+\mathrm{OH}^{-}(a q)$ II. $\mathrm{NH}_{4}^{+}(a q)+\mathrm{H}_{2} \mathrm{O} \rightleftharpoons \mathrm{H}_{3} \mathrm{O}^{+}+\mathrm{NH}_{3}(g)$ III. $\mathrm{NH}_{2}^{-}(a q)+\mathrm{H}_{2} \mathrm{O} \rightleftharpoons \mathrm{NH}_{3}(g)+\mathrm{OH}^{-}(a q)$ IV. $\mathrm{NH}_{3}(g)+\mathrm{OH}^{-}(a q) \rightleftharpoons \mathrm{NH}_{2}^{-}(a q)+\mathrm{H}_{2} \mathrm{O}$

  • A
    II and III
  • B
    III and IV
  • Correct answer
    C
    I and II
  • D
    III and I

Solution

Ionic product of water is given by following reaction, I. $\mathrm{NH}_{3}(a q)+\mathrm{H}_{2} \mathrm{O} \rightleftharpoons \mathrm{NH}_{4}^{+}+\mathrm{OH}^{-}(a q)$ II. $\mathrm{NH}_{4}^{+}(a q)+\mathrm{H}_{2} \mathrm{O} \rightleftharpoons \mathrm{H}_{3} \mathrm{O}^{+}+\mathrm{NH}_{3}(g)$

Hence, the correct answer is option: 'C'.

More Ionic Equilibrium Questions