Chemistry

Problem

Calculate the Gibbs energy change when 1 mole of

\text{NaCl}

is dissolved in water at 298 K. Given, (a) Lattice energy of

\text{NaCl} = 778 \text{ kJ mol}^{-1}

. (b) Hydration energy of

\text{NaCl} = 774.3 \text{ kJ mol}^{-1}

. (c) Entropy change at 298 K =

43 \text{ J mol}^{-1}