Solubility Curves

Using the provided solubility graph, place the following substances in the proper type of solution formed in 100 g of water.

Groups:

(a) Unsaturated

,

(b) Saturated

,

(c) Supersaturated

• 65 g KNO₃ at 70°C

• 130 g of KI at 0°C

• 80 g KNO₃ at 48°C

• 70 g of NH₄Cl at 88°C

• 10 g SO₂ at 60°C

• 50 g of KCl at 90°C

• 48 g KNO₃ at 60°C

• 60 g of HCl at 45°C

• 25 g of NaCl at 0°C

• 50 g of KCl at 60°C

Organize these options into solid or gas based on their solubility curves given in the graph.

Groups:

(a) Solid

,

(b) Gas

• KI

• NaNO₃

• NH₃

• SO₂

• KClO₃

• HCl

• NH₄Cl

• NaCl

Which of the following will create a supersaturated solution containing 30 grams of KClO₃?

• Heat the water to 62°C.

• Heat the water to 70°C, then let cool to 25°C.

• Heat the water to 30°C, then let in cool to 20°C.

• Heat the water to 50°C.

Tags

NGSS.HS-PS1-5

At approximately what temperature can 115 g of NaNO₃ be dissolved in 100 g of water to create a saturated solution?

____°C

How much KCl can be dissolved in 100 g of water at 75°C to form a saturated solution?

____g

How many grams of HCl can be dissolved in 50 grams of water at 30°C? (Give the answer to the ones place.)

____g

How many grams of NH₄Cl can be dissolved in 200 grams of water at 70°C? (Give the answer to the ones place.)

____g

What temperature do I have to heat 100 grams of water in order to dissolve 120 grams of NaNO₃? (Give the answer to the ones place.)

____°C

Tags

NGSS.HS-PS1-5

NGSS.HS-PS3-4

Placing 100 g of NH₃ in 100 g of water at 0°C will result in ​ (a)   dissolving.

• none of it
• all of it
• most of it
• a small amount

Placing 50 g of NH₄Cl in 100 g of water at 60°C will result in ​ (a)   dissolving.

• none of it
• all of it
• most of it
• a small amount