OBJECT: To measure the heat of fusion of ice, using the method of mixtures.
METHOD: A piece of ice of known mass is dropped into a calorimeter containing a measured quantity of water. The heat given up by the calorimeter cup and its contents (water, thermometer and stirrer) is computed from their combined thermal capacity and the change in temperature. The heat absorbed by the ice is expressed in terms of the mass of ice, the heat of fusion and the change in temperature of the water from the melted ice. The heat given up by the cup and its contents is set equal to the heat absorbed by the ice, and this equation is solved for the latent heat of fusion. A correction is made for the exchange of heat between the calorimeter cup and its surroundings.
