How many grams of sodium nitrate, NaNO_3, are soluble in 100 g of water t 10ºC?

• 100 grams

• 40 grams

• 80 grams

• 10 grams

Which of this salts decreases in solubility as the temperature increases.

• KNO₃

• KClO₃

• K₂Cr₂O₇

• Ce₂(SO₄)₃

At approximately what temperature does the solubility of sodium chloride, NaCl, match the solubility of potasium dichromate, K₂Cr₂O_7?

• 50ºC

• 60ºC

• 83ºC

• 30ºC

Which salt is LEAST soluble at 0ºC?

• K₂Cr₂O₇

• KClO₃

• Ce₂(SO₄)₃

• KNO₃

A beaker containing 80 grams of lead (II) nitrate, Pb(NO₃)₂, in 100 grams of water has a temperature of 30ºC. Approximately how many grams of the salt are undissolved, on the bottom of the beaker?

• 14 grams

• 66 grams

• 80 grams

• 20 grams

When 50 grams of potasium chloride, KCl, is dissolved in 100 grams of water at 50ºC, the solution can be correctly described as:

• unsaturated

• saturated

• supersaturated

When 20 grams of potasium chlorate, KClO₃, is dissolved in 100 grams of water at 80ºC, the solution can be correctly described as:

• supersaturated

• saturated

• unsaturated

Which salt is LEAST soluble at 50ºC?

• K₂Cr₂O₇

• KNO₃

• KClO₃

• Ce₂(SO₄)₃

A solution of potasium chlorate, KClO₃, has 20 grams of the salt dissolved in 100 grams of water at 70ºC. Approximately how many more grams of the salt can be added to the solution before reaching the saturation point?

• 10 grams

• 80 grams

• 60 grams

• 30 grams

When 30 grams of potasium nitrate, KNO₃, is dissolved in 100 grams of water at 20ºC, the solution can be correctly described as:

• unsaturated

• saturated

• supersaturated