Question

<!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> State why an aqueous solution of ammonia turns red litmus blue

Answer 1

<!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> Ammonia on dissolving in water furnishes ammonium ions and hydroxyl ions.
${\text{NH}}_3$ $\text{+}$${\text{H}}_2$$\text{O}$ $\text{⇌}$ ${\text{2NH}}_4^{+}$ $\text{+}$${\text{OH}}^{-}$
the presence of OH- iron turns red litmus blue.