Chapter 10.3, Problem 2RQ

Interpretation Introduction

Interpretation: The energy produced by reaction in calorimeter needs to be determined.

Concept introduction: The change in enthalpy at constant pressure is equal to the heat that flows as a form of energy.

  $\Delta H_p=\text{Heat}$

Here, p indicates that the process occurred in the condition of constant pressure.

Answer to Problem 2RQ

The multiplication of mass, specific heat capacity and temperature change gives energy of the system.

Explanation of Solution

The formula used to calculate energy is,

  $Q\text{=}s\times m\times \Delta T$

Where Q is energy, s is specific heat capacity and $\Delta T$ is change of temperature and m is mass of sample in gram.

So, to calculate energy, mass of the sample (in gram) is to be multiplied by specific heat and temperature change.

Conclusion

Calorimeter is used to determine heat associated with a chemical system..