Water is put into a beaker and heated with a Bunsen burner. The temperature of the water, initially at 25 °C, is monitored. Explain what happens to the temperature as a function of time. Make a sketch of how the temperature might change with time. (Assume that the Bunsen burner is hot enough to heat the water to its boiling point.)
Initial temperature of water = 25 °C. Bunsen burner is placed under the sample and is hot enough to heat the water to its boiling point.
We know, the boiling point of water is 100 °C. So, as time increases, the heat energy given from the burner is increased and as a result the temperature of water is increased and once the temperature of water reaches 100 °C, water starts evaporating. The temperature then remains constant during the transition from boiling to evaporation. After the transition, the temperature increases with the time.