Question

By giving balanced chemical equations state what happens, when calcium reacts with cold water.

Answer 1

• Calcium reacts with cold water to form calcium hydroxide (CaOH₂) and hydrogen (H₂).
• The reaction is as follows:

$\underset{\mathrm{calcium}}{\mathrm{Ca}\left(\mathrm{s}\right)}+\underset{\mathrm{cold}\mathrm{water}}{2{\mathrm{H}}_2\mathrm{O}\left(\mathrm{l}\right)}\to \underset{\mathrm{calcium}\mathrm{hydroxide}}{\mathrm{Ca}{\left(\mathrm{OH}\right)}_2\left(\mathrm{aq}\right)}+\underset{\mathrm{hydrogen}}{{\mathrm{H}}_2\left(\mathrm{g}\right)}$