Solubility Curves Ws printable pdf download

Solubility Curves Ws

Solubility Curves WS

Name: _____________________

A: Based on the solubility chart below, decide whether each of the following is

U: unsaturated, S: saturated, C: supersaturated, or NI: not enough information is given.

Assume all masses are completely dissolved.

1) 50 g KCl in 100 g of water at 90 C. ____

5) 150 g KNO

in 100 g of water at 70 C. ____

2) 50 g KCl in 100 g of water at 60 C. ____

6) 25 g KNO

in 100 g of water 60 C. ____

3) 50 g KNO

in 100 g of water at 60 C. ___ 7) 25 g NaCl in water. ____

4) 120g KNO

in 100 g of water at 60 C. ___ 8) 40 g of KCl in 100g of water at 20 C. ____

B: Write your numerical answer in the space provided.

9) How many grams of KCl can dissolve in 100.0 g of water at 65 C? _____

10) What temperature is required to get 85 g of KNO

to dissolve in 100.0 g of water? ____

11) Which substance has the highest solubility at 40 C? _______

12) Which substance has the most consistent solubility? _______

13) Which substance has the lowest solubility at 80 C? _______

14) Which substance has the biggest increase in solubility from 30 C to 50 C? _______

15) If you have 100 grams of water how many milliliters is that? _______

16) What is the mass of 75 mL of water? _____

C: SHOW YOUR WORK FOR THE FOLLOWING USING THE EQUATION SHOWN!

Equation:

g solute (from graph)

g solute (from problem)

g solvent (from graph)

g solvent (from problem)

The ratios are equal, so if you have three of the variables you can solve for the fourth. =)

17) How many grams of KNO

can be dissolved

in 50.0 grams of water at 50.0 C? ~ 40g

18) What mass of KCl can be dissolved in 20

grams of water at 15.0 C? ~ 6 g

19) How much KNO

can be dissolved in 14.3 g

of water at 71 C? ~ 18.6 g

20) How many grams of water will it take to

dissolve 28.0 g of NaCl at 60.0 C? ~ 73.7 g

Solubility Curves Ws