Question

Explain the following temperature vs time graph.

Answer 1

1. During the heating of ice, the change in temperature with time is shown in the graph.
2. Seg AB - Seg AB represents the conversion of ice into the water at a constant temperature. During the melting of ice at 0°C, ice absorbs heat energy and this continues till all the ice converts into water.
3. Seg BC - Once all ice is transformed into water, the temperature of water starts rising it increases up to 100°C. Seg BC represents a rise in the temperature of water from 0°C to 100°C.
4. Seg CD - Even though the heat energy is supplied to the water after 100°C its temperature does not rise. The heat energy absorbed by water is used to break the bonds between molecules of the liquid to convert it into a gaseous state.