Question

The solution of ash of magnesium ribbon is acidic , basic or neutral?

Answer 1

Magnesium Burns in presence of oxygen to produce Magnesium Oxide.

$\underset{\mathrm{Magnesium}}{2\mathrm{Mg}\left(\mathrm{s}\right)}+\underset{\mathrm{Oxygen}}{{\mathrm{O}}_2\left(\mathrm{g}\right)}\to \underset{\mathrm{Magnesium}\mathrm{oxide}}{2\mathrm{MgO}\left(\mathrm{s}\right)}$

When this magnesium oxide dissolves in water gives Magnesium Hydroxide

$\underset{\mathrm{Magnesium}\mathrm{oxide}}{\mathrm{MgO}\left(\mathrm{s}\right)}+\underset{\mathrm{Water}}{{\mathrm{H}}_2\mathrm{O}\left(\mathrm{g}\right)}\to \underset{\underset{\mathrm{BASIC}}{\mathrm{Magnesium}\mathrm{Hydroxide}}}{\mathrm{Mg}{\left(\mathrm{OH}\right)}_2\left(\mathrm{s}\right)}$

The solution of ash of magnesium ribbon is basic in Nature.