Chapter 23, Problem 14A

How can water be made to both boil and freeze at the same time?

To determine

To Explain:The way to make water both boil and freeze at the same time.

Answer to Problem 14A

At the triple point condition that is at $273.16\text{K, 611}\text{.2 Pa }$ The water can both boil or freeze at the same time.

Explanation of Solution

Introduction:

The normal boiling of the water occurs at $373\text{K}$ ,but if the water pressure is decreased then that causes a decrease in the boiling point temperature.

The freezing point of the water is $273.15\text{K}$ . As the pressure of the water decreases, it causes increase in the freezing point of the water.

When the water reaches to a temperature, pressure that is at $273.16\text{K, 611}\text{.2 Pa }$ which is called as triple point, the freezing point and boiling point coincide. This causes the freezing and boiling of water at the same time.

Conclusion:

At the triple point condition that is at $273.16\text{K, 611}\text{.2 Pa }$ The water can both boil or freeze at the same time.