Calcium carbonate reacts with hydrochloric acid according to

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

Problem

\text{CaCO}_3(s)+2\text{HCl}(aq)\rightarrow \text{CaCl}_2(aq)+\text{CO}_2(g)+\text{H}_2\text{O}(l)

, for which

\Delta H=-178\,\text{kJ}

for the reaction as written. A student adds

2.50\,\text{g}

\text{CaCO}_3

25.0\,\text{mL}

2.00\,\text{M}

\text{HCl}

. Determine the heat

q

released when the reaction goes to completion at constant pressure.