Questions: You are providing heat to a vessel of water, its temperature rises to 100°C, and you continue to provide the heat. What happens next?

Solution Steps

When water is heated, its temperature increases until it reaches its boiling point. At standard atmospheric pressure (1 atm), the boiling point of water is \(100^{\circ} \mathrm{C}\).

Once the water reaches \(100^{\circ} \mathrm{C}\), any additional heat provided does not increase the temperature further. Instead, the heat energy is used to convert the water from the liquid phase to the gaseous phase (steam). This process is known as boiling or vaporization.

The energy required to change the phase of water from liquid to gas without changing its temperature is called the latent heat of vaporization. For water, this is approximately \(2260 \, \text{kJ/kg}\). During this phase change, the temperature remains constant at \(100^{\circ} \mathrm{C}\) until all the water has been converted to steam.

Final Answer