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. $\mathrm{NH}_{3}(g)+\mathrm{OH}^{-}(a q) \rightleftharpoons \mathrm{NH}_{2}^{-}(a q)+\mathrm{H}_{2} \mathrm{O}$
- AII and III
- BIII and IV
- Correct answerCI and II
- DIII 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'.