Chapter 14, Problem 42R

To determine

The processes shown by the alphabets in the heating curve of the ice.

Answer to Problem 42R

The letter B, D shows the phase change and letter A, C, E shows the rise in temperature of the water.

Explanation of Solution

Introduction:

The heating curve of the substance is the graphical representation of the variation in the temperature with time. It shows the behavior of the substance according to the heat at different time.

The letter A shows the rise in the temperature of the ice from the $-25°\text{C}$ to $0°\text{C}$ .

The letter B shows the phase change of the ice. The melting of the ice takes place corresponding to B at $0°\text{C}$ and changes into water of $0°\text{C}$ . The temperature remains same during this change.

The letter C shows the rise in the temperature of the water from $0°\text{C}$ to boiling point temperature $\left(100°\text{C}\right)$ of water.

The letter D shows the phase change of the water at boiling point from liquid to vapor.

The letter E shows the rise in the temperature of the vapor.

Conclusion:

Thus, the letter B, D shows the phase change and letter A, C, E shows the rise in temperature of the water.