1. Word Problems using Reference Table G

2. Table G problems
involve setting up a proportion to compare original verses new data
find amount solute required for given amount of solvent Or
find amount solvent required for given amount of solute

3. Problem:
How much KCl will dissolve in 300 grams of water at 50C?
Use the graph to set up a proportion
42 g KCl = X g KCl
100 g H2O g H2O
X = 126g KCl

4. How much H2O is required to just dissolve 200 g NaNO3 at 20C?
88 g NaNO3 = 100 g H2O
200 g NaNO3
X g of H2O
X = g H2O

5. Ex: precipitation word problem
A saturated solution of KNO3 is prepared in 100 g of water at 50C and then cooled down to 10C. How much KNO3 will precipitate?

6. 88 g KNO3 in 100 g H2O at 50C
20 g KNO3 in 100 g H2O at 10C
88 g – 20 g = 68 g KNO3 precipitates