Chapter U5, Problem C19.1RE

Interpretation Introduction

Interpretation: An experimental setup that helps to compare two fuels to be described. 

Concept introduction: Combustion reactions are used to power vehicles, heat water and homes, and create electricity. But not all combustion reactions provide the same amount of energy.

Answer to Problem C19.1RE

The most common method of measuring this energy is calorimetry. Water is heated from combustion energy then compares the rise in temperature of water.

Explanation of Solution

The most common method of measuring this energy is calorimetry. In the process of calorimetry burn same amount of both fuels. Water is heated from combustion energy then compares the rise in temperature of water. This is because heat supplied is directly proportional to rise in temperature.

Conclusion

Energy transferred can be expressed in $\text{kcal}/\text{mol,}\text{kcal}/\text{g,}\text{kJ}/\text{mol,}\text{or}\text{kJ}/\text{g}$ . During a chemical change amount of energy transferred per gram or per mole is commonly called the heat of reaction $\left(\Delta \text{H}\right)$ .