Question

Freon-11, CCl3F has been commonly used in air conditioners. It has a molar mass of 137.35 g/mol and its enthalpy of vaporization is 24.8 kJ/mol at its normal boiling point of 24C. Ideally how much energy in the form of heat is removed from a room by an air conditioner that evaporates 1.00 kg of freon-11?

Answer 1

180.56 Kilo joules of energy is removed in the form of heat when 1.00 kg of freon-11 is evaporated.

Step-by-step explanation:

Molar mass of freon-11 = 137.35 g/mol

Enthalpy of vaporization of freon-11=
`\Delta H_(vap)=24.8 kJ/mol`

Mass of freon-11 evaporated = 1.00 kg = 1000 g

Moles of freon-11 evaporated =
`(1000 g)/(137.35 g/mol)=7.2807 mol`

Energy in the form of heat removed when 1.00 kg of freon-11 gets evaporated:

`7.28067 mol* \Delta H_(vap)=7.2807 mol* 24.8 kJ/mol`

`=180.56 kJ`