A piece of ice, 100 g in mass is kept at 0 °C. The amount of heat it r

A piece of ice, 100 g in mass is kept at 0 °C. The amount of heat it requires to melt at 0 °C is (take latent heat of melting of ice to be 333.6 J/g):

750.6 J
83.4 J
33360 J
3.336 J
This question was previously asked in
UPSC CDS-1 – 2016
The amount of heat required to melt 100 g of ice at 0°C is 33360 J.
– The heat required for a substance to change phase (like melting) at a constant temperature is given by the formula Q = m * L, where Q is the heat energy, m is the mass, and L is the latent heat of fusion (for melting) or vaporization (for boiling).
– Given mass of ice m = 100 g.
– Given latent heat of melting of ice L = 333.6 J/g.
– Heat required Q = 100 g * 333.6 J/g = 33360 J.
Latent heat is the energy absorbed or released during a phase transition at constant temperature and pressure.