Chapter 17, Problem 55A

Interpretation Introduction

Interpretation: The function of the calorimeter is to be discussed.

Concept Introduction:

A calorimeter is a device used to measure the amount of heat involved in a chemical or physical reaction. The heat change during a chemical reaction leads to a change in temperature which is used to measure the enthalpy.

Answer to Problem 55A

The function of the calorimeter is to measure the heat change during a given reaction.

Explanation of Solution

If heat is absorbed during the reaction, then heat is transferred from the calorimeter to the system, and the temperature of the calorimeter decreases. Similarly, if the reaction releases heat, then heat is transferred from the system to the calorimeter, and the temperature of the calorimeter increases. The amount of heat transfer is calculated by using mass, specific heat, and temperature change.