solubility and concentration graph quiz

At approximately what temperature does the solubility of sodium chloride, NaCl, match the solubility of potassium dichromate, K₂Cr₂O₇?

• 60 ºC
• 30 ºC
• 50 ºC
• 83 ºC

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

• saturated
• unsaturated
• supersaturated

How many grams of sodium nitrate, NaNO₃, are soluble in 100 g of water at 10 ºC?

• 80 grams
• 100 grams
• 40 grams
• 10 grams

Which salt is LEAST soluble at 0 ºC?

• K₂Cr₂O₇
• KNO₃
•  KClO₃
• Ce₂(SO₄)₃

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

• 20 grams
• 80 grams
• 66 grams
• 14 grams

This solution would be considered

• Unsaturated
• Supersaturated
• Saturated
• Undefined

This graph represents a(n) ___ solution

• saturated
• supersaturated
• unsaturated
• undefined

How much KNO₃ solute is saturated at 40 degrees?

• 75

• 55

• 65

• 85

At what temperature can you fully dissolve 120g of NaBr?

• 70

• 20

• 100

• You cannot determine this

What type of a solution is 260g sugar at 50ºC in 100g H₂O?

• Saturated

• Unsaturated

• Supersaturated