Chapter 10, Problem 125AE

Interpretation Introduction

Interpretation:

It should be determined that what are the phases present when $\text{215}\text{kJ}$ of energy removed from a $\text{75}\text{.0}\text{g}$ sample of ${\text{H}}_{\text{2}}\text{O}\text{(g)}$ at ${\text{125}}^{\text{0}}\text{C}$.

Concept introduction:

• Phase is a physically distinctive form of matter such as a solid, liquid, gas or plasma.
• Boiling point is the temperature at which the vapor pressure of the liquid equals the pressure surrounding the liquid and the liquid changes into a vapor.
• Freezing point the temperature at which the liquid and solid state of the substance are in equilibrium at atmospheric pressure.
• Specific heat capacity is the amount of heat energy required to raise the temperature of the substance per unit of mass. Specific heat capacity of water is $\text{4}{\text{.184J/(g}}^{\text{0}}\text{C)}$

To determine: the phases present when $\text{215}\text{kJ}$ of energy removed from a $\text{75}\text{.0}\text{g}$ sample of ${\text{H}}_{\text{2}}\text{O}\text{(g)}$ at ${\text{125}}^{\text{0}}\text{C}$.