Solutions, Solubility

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

• KNO3

• KBr

• NaCl

• Yb2(SO4)3

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

• 60

• 55

• 50

• Never

The solubility of Yb2(SO4)3 ________________ with added temperature.

• increases

• decreases

• remains the same

At 80'C, KBr's solubility is:

• 100

• 90

• 80

• 0

Tags

NGSS.HS-PS1-5

NGSS.HS-PS3-4

Determine the solubility for the substances at 55'C and arrange them in order from lowest to highest solubility.

• NaCl, NH4Cl, KBr, NaNO3

• NaCl, NH4Cl, NaNO3, KBr

• NH4Cl, NaCl, NaNO3, KBr

• NaNO3, KBr, NH4Cl, NaCl

Tags

NGSS.HS-PS3-4

At 10'C, NaNO3's solubility is 80 g/100 g of H2O. Based on this information, what would the solubility be in 50 g of H2O.

• 40

• 80

• 160

• 16

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

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

• Add solvent

• Add solute

Water is considered polar due to:

• its neutral poles

• its charged poles

• the odd number of atoms involved

Tags

NGSS.HS-ESS2-5