Unit 6: Calorimetry calculations

Question 1

specific heat

Answer 1

The energy needed to raise 1 gram of a substance by 1^oC

symbol: cp
unit: cal/g^oC

Question 2

Heat of Fusion

Answer 2

The energy released to freeze 1 gram of a liquid into a solid. Also the energy gained by 1 gram of solid when it melts to liquid.

symbol: ΔH_F

Unit: cal/g

Question 3

Heat of Vaporization

Answer 3

The energy gained to vaporize 1 gram of a liquid into a gas. Also the energy lost by 1 gram of gas when it condenses to liquid.

symbol: ΔH_V

Unit: cal/g

Question 4

specific heat of water

Answer 4

exactly 1 cal/g^oC

infinite sig figs! This is by definition, not by measurement.