1. 17.3 Heat in Changes of State

2. Vapor ___________________
Liquid ___________________
Solid ____________________
Heats of Fusion – Solidification and Vaporization – Condensation are know
and they are molar

3. How many grams of ice at 0·C will melt if 2. 25 KJ of heat are added
How many grams of ice at 0·C will melt if 2.25 KJ of heat are added? ∆Hfus = 6.01 kJ ∆H = 2.25kJ Can you write an equation for the process?

4. How many grams of ice at 0·C will melt if 2. 25 kJ of heat are added
How many grams of ice at 0·C will melt if 2.25 kJ of heat are added? H20(s) kJ → H20(l) ice with 6.01 kJ of heat will melt We are asked for how many grams will melt… How can you get grams to be your final unit?

5. H20(s) kJ → H20(l)
1 mol ice 6.01 kJ What is the most specific info we have to start with? What units do we want our answer to be in?

6. H20(s) kJ → H20(l)
Massice = 225 kJ 1 mol ice 18.0 g ice 6.01 kJ 1 mol ice

7. H20(s) kJ → H20(l)
Massice = 225 kJ 1 mol ice 18.0 g ice = 6.74g 6.01 kJ 1 mol ice