# What is the molar heat of solidification of water?

When 1 mol of water at 0°C freezes to ice at 0°C, 6.01 kJ of heat are released into the surroundings. The molar heats of fusion and solidification of a given substance can be used to calculate the heat absorbed or released when various amounts are melted or frozen.
A.

### What is the molar heat of vaporization of water?

It is only for one mole of substance boiling. The molar heat of vaporization is an important part of energy calculations since it tells you how much energy is needed to boil each mole of substance on hand. The units for the molar heat of vaporization are kilojoules per mole (kJ/mol).
• #### What is the molar heat of sublimation?

The molar heat (or enthalpy) of sublimation is the amount of energy that must be added to a mole of solid at constant pressure to turn it directly into a gas (without passing through the liquid phase).
• #### What is the molar heat of vaporization of ethanol?

The molar heat of vaporization of ethanol is 39.3 kJ/mol and the boiling point of ethanol is 78.3°C. Calculate ΔS for the vaporization of 0.50 mol ethanol.
• #### What is the heat of vaporization of water in calories per gram?

Similarly, while ice melts, it remains at 0 °C (32 °F), and the liquid water that is formed with the latent heat of fusion is also at 0 °C. The heat of fusion for water at 0 °C is approximately 334 joules (79.7 calories) per gram, and the heat of vaporization at 100 °C is about 2,230 joules (533 calories) per gram.
B.

### What is the molar heat of fusion of ice?

The molar heat of fusion of ice is 6.01 kJ/mol.
• #### What is the heat of fusion of ice?

The enthalpy of fusion of a substance, also known as (latent) heat of fusion, is the change in its enthalpy resulting from providing energy, typically heat, to a specific quantity of the substance to change its state from a solid to a liquid, at constant pressure.
• #### What is the molar heat of sublimation?

The molar heat (or enthalpy) of sublimation is the amount of energy that must be added to a mole of solid at constant pressure to turn it directly into a gas (without passing through the liquid phase).
• #### What is the value of the specific latent heat of fusion of ice?

1 calorie = 4.186 J.
Latent heat of vaporization of water = 539 cal/g = 2256 kJ/kg.
Latent heat of fusion of water = 79.5 cal/g = 333 kJ/kg.
Specific heat of water = 1 cal/g = 4.19 kJ/kg.

Updated: 2nd October 2019