Chapter 9, Problem 4RQ

To determine

The temperature of melting ice on the Kelvin scale and of boiling water at atmospheric pressure.

Answer to Problem 4RQ

The temperature of melting ice on the Kelvin scale is $273\text{K}$ and of boiling water at atmospheric pressure is $373\text{K}$.

Explanation of Solution

The temperature at absolute zero is the temperature at which the body cannot attain any coldness after this temperature. At this temperature, molecules have lost all available kinetic energy and no more energy can be taken from the body.

The absolute temperature scale is called Kelvin scale. The absolute zero is $0\text{K}$ or $-273°\text{C}$ . Degrees on the Kelvin scale are same as that on the Celsius scale. The temperature for the melting point of ice is $273\text{K}$ and that for boiling water at constant pressure is $373\text{K}$.

Conclusion:

Therefore, the temperature of melting ice on the Kelvin scale is $273\text{K}$ and of boiling water at atmospheric pressure is $373\text{K}$.