Name: _____________________
Period: ___
Solubility Curves Practice
DIRECTIONS: Use the handout graph to solve the following problems.
___________1) What is the solubility of KNO3 in 100 grams of water at 60 °C ?
___________2) What is the solubility of KCl in 100 grams of water at 50 °C ?
___________3 )What is the solubility of NaCl in 100 grams of water at 90 °C ?
___________4) What is the minimum temperature needed to dissolve 130 grams of
KNO3 in 100 grams of water
___________5) What is the minimum temperature needed to dissolve 35 grams of KCl in
100 grams of water
______6) At what temperature do KCl and KNO3 have the same solubility ?
___________7 )At what temperature do KNO3 and NaCl have the same solubility ?
__________8) If 110 grams of KCl are mixed with 100 grams of water at 20 °C, how
much will not dissolve ?
___________9) If 250 grams of KNO3 are mixed with 100 grams of water at 50 °C, how
much will not dissolve ?
___________10) If 50 grams of NaCl are mixed with 100 grams of water at 80 °C, how
much will not dissolve ?
___________11) If 15 grams of KCl are added to 100 grams of water at 30 °C, how
much more must be added to saturate the solution?
___________12) If 120 grams of KNO3 are added to 100 grams of water at 70 °C, how
much more must be added to saturate the solution ?
___________13) If 10 grams of NaCl are added to 100 grams of water at 100 °C, how
much more must be added to saturate the solution ?
___________14) 100 grams of water are saturated with KCl at 35 °C. If this solution is
heated to 95oC, how much more can be dissolved ?
___________15) 100 grams of water are saturated with KNO3 at 20 °C. If the solution is
heated to 70oC, how much more can be dissolved?
Name: _____________________
Period: ___
___________16) 100 grams of water at 50 °C are saturated with NaCl. If this solution is
heated to 100 °C, how much more can be dissolved ?
___________17) 100 grams of water at 50 °C are saturated with KNO3. If this solution is
cooled to 35oC, how much of the solid will precipitate(change from the dissolved state to
the solid state) ?
___________18) 100 grams of water at 90 °C are saturated with KCl. If this solution is
cooled to 35oC, how much of the solid will precipitate?
___________19) How much KNO3 will dissolve in 50 grams of water at 70 °C ?
___________20) How much KNO3 will dissolve in 10 grams of water at 10 °C ?
___________21) How much KCl will dissolve in 50 grams of water at 50 °C ?
___________22) How much KCl will dissolve in 25 grams of water at 80 °C ?
___________23) If 50 grams of water are saturated at 50 °C with KNO3 and then cooled
to 40°C, how much will precipitate ?
___________24) What temperature is needed to dissolve twice as much KCl as can be
dissolved at 0 °C in 100 grams of water ?
___________25) What temperature is needed to dissolve twice as much KNO3 as can be
dissolved at 10 °C in 100 grams of water ?