Read the passage and answer the following question-
Latent Heat
The term latent means hidden. The latent heat of a substance is the amount of heat absorbed by a unit mass of the substance to change its state without a change of temperature. Its SI unit is Joules per kilogram. Latent heat is of two types:
1. Latent heat of fusion.
2. Latent heat of vaporization.
The Latent heat of fusion of a solid is the quantity of heat in Joules required to convert 1 KG of solid (at its melting point) to liquid, with no change in temperature.
The Latent heat of vaporization of a liquid is the quantity of heat in Joules required to convert 1 KG of the liquid (at its boiling point) to gas with no change in temperature.
Specific heat
It is the amount of heat that is required to raise the temperature of a unit mass of the substance by 1 °C. The symbol is C or S. The specific heat varies slightly with temperature. This is due to varies slightly with the change which occurs in the structure of molecules in a substance with change in temperature. The unit of specific heat is Joules per kilogram per degree Celsius
Identify which conversion will require a larger amount of energy?
(i) 1kg of ice at 0 °C to 1kg of water at 0 °C.
(ii) 1kg of water at 100 °C to 1kg of steam at 100 °C
The term latent means hidden. The latent heat of a substance is the amount of heat absorbed by a unit mass of the substance to change its state without a change of temperature. Its SI unit is Joules per kilogram. Latent heat is of two types:
1. Latent heat of fusion.
2. Latent heat of vaporization.
The Latent heat of fusion of a solid is the quantity of heat in Joules required to convert 1 KG of solid (at its melting point) to liquid, with no change in temperature.
The Latent heat of vaporization of a liquid is the quantity of heat in Joules required to convert 1 KG of the liquid (at its boiling point) to gas with no change in temperature.
Specific heat
It is the amount of heat that is required to raise the temperature of a unit mass of the substance by 1 °C. The symbol is C or S. The specific heat varies slightly with temperature. This is due to varies slightly with the change which occurs in the structure of molecules in a substance with change in temperature. The unit of specific heat is Joules per kilogram per degree Celsius
Identify which conversion will require a larger amount of energy?
(i) 1kg of ice at 0 °C to 1kg of water at 0 °C.
(ii) 1kg of water at 100 °C to 1kg of steam at 100 °C
Important Questions on Matter in Our Surroundings
The boiling point of alcohol is , what will it be in degree Celsius?
(Use )
Round off your answer to the nearest integer.
