A mixture containing of magnesium powder and of oxygen gas reacts to form solid…

CHEMISTRY · Subjective · A Level · Chemistry · Energetics · Energetics

Problem

A mixture containing

12.0\,\text{g}

of magnesium powder and

12.0\,\text{g}

of oxygen gas reacts to form solid magnesium oxide by the reaction

\mathrm{2\,Mg(s)+O_2(g)\to2\,MgO(s)}

with

\Delta H_{\text{rxn}}=-601\,\text{kJ}\,\text{mol}^{-1}

(per mole of

\mathrm{MgO}

produced). Calculate the heat released when the reaction goes to completion.