Question:
Write balanced equations for reactions between
(a) Na2O2and water
(b) KO2 and water
(c) Na2O and CO2
Solution:
(a) The balanced chemical equation for the reaction between Na2O2 and water is:
$2 \mathrm{Na}_{2} \mathrm{O}_{2(s)}+2 \mathrm{H}_{2} \mathrm{O}_{(i)} \longrightarrow 4 \mathrm{NaOH}_{(a q)}+\mathrm{O}_{2(a q)}$
(b) The balanced chemical equation for the reaction between KO2 and water is:
$2 \mathrm{KO}_{2(s)}+2 \mathrm{H}_{2} \mathrm{O}_{(i)} \longrightarrow 2 \mathrm{KOH}_{(a q)}+\mathrm{H}_{2} \mathrm{O}_{2(a q)}+\mathrm{O}_{2(g)}$
(c) The balanced chemical equation for the reaction between Na2O and CO2 is:
$\mathrm{Na}_{2} \mathrm{O}_{(s)}+\mathrm{CO}_{2(g)} \longrightarrow \mathrm{Na}_{2} \mathrm{CO}_{3}$