Practical - Solubility

At 30'C, which substance has the lowest solubility?

• KNO3

• KBr

• NaCl

• Yb2(SO4)3

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

At which temperature do KBr and KNO3 have the same solubility?

• 60

• 55

• 50

• Never

Tags

NGSS.HS-PS1-5

At 80'C, KBr's solubility is:

• 100

• 90

• 80

• 0

Tags

NGSS.HS-PS1-5

Identify if the following solution would be saturated, unsaturated, or supersaturated: 103 g KBr at 70'C.

• Unsaturated

• Saturated

• Supersaturated

Tags

NGSS.HS-PS1-5

Identify how many grams of KNO3 is required to make a saturated solution at 40'C.

• 50 g

• 45 g

• 55 g

• 33 g

Tags

NGSS.MS-PS1-2

How could you change a saturated solution to an unsaturated solution?

• Add solvent

• Add solute

Tags

NGSS.MS-PS1-2

Water is considered polar due to:

• its neutral poles

• its charged poles

• the odd number of atoms involved

Identify a method to decrease the dissolving rate of a solution:

• decrease the temperature

• add KE

• stir the solution

• increase the temperature

Tags

NGSS.HS-PS1-5

Identify the saturation associated with the product of this experiment.

• Unsaturated

• Saturated

• Supersaturated

Tags

NGSS.MS-PS1-2

How does a solution become supersaturated?

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