Question

Why does temperature become constant at 100°C while determining boiling point of water

Answer 1

Explanation:

When boiling occurs, the more energetic molecules change to a gas, spread out, and form bubbles. These rise to the surface and enter the atmosphere. ... In addition, gas molecules leaving the liquid remove thermal energy from the liquid. Therefore the temperature of the liquid remains constant during boiling.

Answer 2

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The temperature remains constant at boiling point of water because the heat produced if used to break the kinetic energy between the particles.