Chem Comm ~ Solubility Curve

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.MS-PS1-2

NGSS.MS-PS1-4

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

Where do the lines cross?

• 60 ºC

• 30 ºC

• 50 ºC

• 83 ºC

Which substance is MOST soluble at 0 ºC?

• KI
• NaNO₃
• NaCl
• Ce₂(SO₄)₃

Tags

NGSS.HS-PS1-5

Which solute is the least soluble at 90 ⁰C?

• SO₂
• KClO₃
• KI
• HCl

Tags

NGSS.MS-PS1-4

Which solute is the most soluble at 10 ⁰C?

Remember: the points on the curves represent the AMOUNT of solute (x axis) the will dissolve in 100 g of water at various temperature. So... if more dissolves, it would be described as MORE SOLUBLE.

• KI

• KClO₃

• NH₄Cl

• NH₃

Which solute does not increase in solubility as temperature rises? In other words, it gets LESS soluble as the temperature increases.

• NH₃

• NaNO₃

• KNO₃

• NaCl

When 20 grams of KNO₃ is dissolved in 100 grams of water at 80 ºC, the solution can be correctly described as:

• supersaturated
• saturated
• unsaturated

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

When 42 grams of potassium chloride ( KCl), is dissolved in 100 grams of water at 50 ºC, the solution can be correctly described as:

• supersaturated

• saturated

• unsaturated

In a solution, the part of the mixture in which other substance are dissolved

• Strainer

• Solvent

• Solute

• Magnetism

The substance which dissolved in the solvent

• Dissolve

• Solubility

• Solvent

• Solute

Tags

NGSS.MS-PS1-2