Ammonium nitrate dissolves in water with an enthalpy of solution of

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

Problem

\Delta H_{\text{soln}} = +27\,\text{kJ mol}^{-1}

. A student dissolves

0.50\,\text{mol}

\text{NH}_4\text{NO}_3

in a well-insulated calorimeter. Describe the direction of heat flow between the solution and its surroundings and state the sign of

q

for the dissolving process.