CHM110H5 Lecture 7: LAB Heat Ionization of a Weak Acid
Document Summary
The heat of ionization of a weak acid. In this experiment, the heat of ionization of a weak acid was investigated. According to the first law of thermodynamics, the total internal energy is equal to q, the heat energy gained by the system and w, the work done on the systeml: e = q + w. At constant pressure the equation becomes e = qp - p v where qp is the change in heat content of the system at constant pressure. H = hfinal hinitial = qp = e + p v. In this experiment, a styrofoam cup calorimeter was used to measure heats of reaction since it is a reasonably good insulator. The heat capacity of the calorimeter is determined experimentally to measure the temperature change resulting from mixing inside the calorimeter two known quantities of water initially at different temperatures.
