Question

Why does the temperature of a substance remain constant during its m.pt. or boiling point

Answer 1

Answer:

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The 'temperature of a substance' remains constant during its melting and boiling point because the change in any state of matter as n solid to liquid or the liquid to a gas involves crossing the 'latent heat of fusion' which causes a change in the intermolecular spacing of the molecules in the substance.

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Answer 2

Explanation:

The temperature of a substance remain constant due to:

• Laten heat of fusion during melting
• Laten heat of vaporization during boiling

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