Problema 3 · Química II URV 2000

Problema 3. Temperatura de equilibrio de mezcla hielo-agua

A mass of 150 g of ice at 0 °C is introduced into a container containing 300 g of liquid water at 50 °C. Assuming an isolated system with negligible heat losses to the surroundings or container walls, calculate the final equilibrium temperature of the mixture.

Data:

Enthalpy of fusion of ice, $Q_{\mathrm{fus}} = 80\ \mathrm{cal\cdot g^{-1}}$; specific heat capacity of liquid water, $c_e = 1\ \mathrm{cal\cdot g^{-1}\cdot{^\circ}C^{-1}}$.