Question

The latent heat of fusion of ice is

• A. 33.5 X 10⁵ J kg^-1
• B. 3.35 X 10⁵ J kg^-1
• C. 33.5 X 10⁶ J kg^-1
• D. 5.33 X 10⁵ J kg^-1

Answer 1

The correct option is B

3.35 X 10⁵ J kg^-1

Latent heat ---- The required energy to change the substance from one state to another state at constant

• temperature and pressure are constant
• It is two types
• Latent heat of fusion
• Latent heat of vaporization — The heat absorbed when a substance changes phase from liquid to gas is called Latent heat of vaporization
• The unit of latent heat of vaporization is. J kg^-1
• Latent heat of fusion ---- The amount of heat energy that is required to change 1 kg of a solid into liquid at atmospheric pressure at its melting point is known as the latent heat of fusion.
• The unit of latent heat of fusion J kg^-1
• The latent heat of fusion of ice is 3.35 X 10⁵ J kg^-1

Thus, the correct option is B I:e 3.35 X 10⁵ J kg^-1