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- 1. Multiple Choice
At 30'C, which substance has the lowest solubility?
KNO3
KBr
NaCl
Yb2(SO4)3
- 2. Multiple Choice
At which temperature do KBr and KNO3 have the same solubility?
60
55
50
Never
- 3. Multiple Choice
The solubility of Yb2(SO4)3 ________________ with added temperature.
increases
decreases
remains the same
- 4. Multiple Choice
At 80'C, KBr's solubility is:
100
90
80
0
- 5. Multiple Choice
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
- 6. Multiple Choice
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
- 7. Multiple Choice
Identify if the following solution would be saturated, unsaturated, or supersaturated: 103 g KBr at 70'C.
Unsaturated
Saturated
Supersaturated
- 8. Multiple Choice
Identify how many grams of KNO3 is required to make a saturated solution at 40'C.
50 g
45 g
60 g
33 g
- 9. Multiple Choice
How could you change a saturated solution to an unsaturated solution?
Add solvent
Add solute
- 10. Multiple Choice
Water becomes __________ changing from a solid to a liquid
more dense & more kinetically chaged
less dense & less kinetically charged
more dense & less kinetically charged
less dense & more kinetically charged
- 11. Multiple Choice
Identify the saturation associated with the product of this experiment.
Unsaturated
Saturated
Supersaturated
- 12. Multiple Choice
Identify a method to decrease the dissolving rate of a solution:
decrease the temperature
add KE
stir the solution
increase the temperature
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