A student mixes 50.0 mL of 1.00 M HCl with 50.0 mL of 1.00 M NaOH in a coffee-cup…

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

Problem

A student mixes 50.0 mL of 1.00 M HCl with 50.0 mL of 1.00 M NaOH in a coffee-cup calorimeter. Both solutions are initially at

22.5\,^{\circ}\text{C}

. After mixing, the final temperature of the combined solution is

28.9\,^{\circ}\text{C}

. Assume each solution has a density of

1.00\,\text{g mL}^{-1}

and a specific heat capacity of

4.18\,\text{J g}^{-1}\,^{\circ}\text{C}^{-1}

. Calculate the molar enthalpy change (in

\text{kJ mol}^{-1}

) for the neutralization of NaOH.