Introduction to Reading Solubility Curves

Which substance is MOST soluble at 0 ºC?

• KI
• NaNO₃
• NaCl
• Ce₂(SO₄)₃

How many grams of K₂Cr₂O₇, are soluble in 100 g of water at 95 ºC?

• 83 grams
• 75 grams
• 40 grams
• 12 grams

Tags

NGSS.HS-PS3-4

Which solute is the most soluble at 10 ⁰C?

• KI
• KClO₃
• NH₄Cl
• NH₃

Tags

NGSS.HS-PS1-5

NGSS.HS-PS3-4

Which solute does not increase in solubility as temperature rises?

• NH₃
• NaNO₃
• KNO₃
• NaCl

Which solute is the least soluble at 90 ⁰C?

• SO₂
• KClO₃
• KI
• HCl

Tags

NGSS.HS-PS1-5

How many grams of K₂Cr₂O₇, are soluble in 100 g of water at 95 ºC?

• 83 grams
• 75 grams
• 40 grams
• 12 grams

Tags

NGSS.HS-PS3-4

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

Tags

NGSS.HS-PS3-4

How does a solution become supersaturated?

• dissolve lots of salt in it
• dissolve a little solute in it
• dissolve more solute than you should be able to.
• dissolve lots of solvent in it

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

• supersaturated
• saturated 
• unsaturated
• super duper saturated 

Tags

NGSS.HS-PS3-4

How do you make a supersaturated solution?

• You add a lot of the solvent in and wait 
• you heat it up and ice it up
• you add super in front of saturated 
• you stir it a lot