Temperature remains constant at boiling point because(i) heat of vaporisation is used to overcome intermolecular forces of attraction(ii) heat of fusion is used(iii) heat of sublimation is used(iv) All of these

The boiling point occurs when…Group of answer choicesThe vapor pressure is equal to the external pressureThe vapor pressure is lower than atmospheric pressureThe intermolecular forces are strongThe temperature of the liquid exceeds the external temperature

When 40 kJ of energy is transferred to a quantity of a liquid substance, its temperatureincreases by 20 K. When 600 kJ of energy is transferred to the same quantity of the liquid atits boiling temperature, it vaporizes completely at constant temperature. What isspecific latent heat of vaporizationspecific heat capacity of the liiquid

The additional heat causes the kinetic energy of some of the liquid molecules to so they can more easily escape into the gas phase. Therefore, the temperature of the boiling water remains constant. Since some of the liquid water changes to gas, the amount of liquid water .

The quantity of heat that changes unit mass of a liquid completely into gas at its boiling point without any change in its temperature is called itsOptions:Alatent heat of pressureBlatent heat of vaporizationClatent heat of fusion latent heat of energyDNone of thesePreviousFinish

What is the latent heat of fusion?Options:A) The heat required to change a substance from solid to liquid at its melting pointB) The heat required to change a substance from liquid to gas at its boiling pointC) The heat required to raise the temperature of a substance by one degree CelsiusD) The heat lost by a substance as it cools