Multiple choice

Which of the following particles will have the highest energy?

  1. Particles in water at 0°C

  2. Particles in water at -273 K

  3. Particles in ice at 0°C

  4. Particles in ice at -273 K
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A Correct answer
Explanation

Melting is the process of conversion of solid into liquid and the amount of heat energy required to convert 1 kg of solid to liquid at atmospheric pressure at its melting point is called latent heat of fusion. When ice at 0oC melts to form water, it absorbs extra heat in the form of latent heat of fusion, i.e. water at 0oC has more heat than ice. Water exists as ice at -273 K; it will have the lowest energy at this temperature.

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