Calculate the enthalpy change when infinitely dilute solutions of and are mixed

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

Problem

Calculate the enthalpy change when infinitely dilute solutions of

\text{CaCl}_2

and

\text{Na}_2\text{CO}_3

are mixed.

\Delta H_f^\circ

for

\text{Ca}^{2+}(aq.)

\text{CO}_3^{2-}(aq.)

and

\text{CaCO}_3(s)

are

-129.80

-161.65

and

-288.50 \text{ kcal mol}^{-1}

respectively.