1. This question has multiple parts. Work all the parts to get the most points.
ID: 536236 • Letter: 1
Question
1. This question has multiple parts. Work all the parts to get the most points.
a
Classify each of the following solutions as saturated, unsaturated, or supersaturated based on the following observations.
Agitation of the solution produces a large amount of solid crystals.
saturated
unsaturated
supersaturated
b
Heating the solution causes excess undissolved solute present to dissolve.
saturated
unsaturated
supersaturated
c
Excess undissolved solute is present at the bottom of the solution container.
saturated
unsaturated
supersaturated
d
The amount of solute dissolved is less than the maximum amount that could dissolve under the conditions at which the solution exists.
saturated
unsaturated
supersaturated
2. This question has multiple parts. Work all the parts to get the most points.
a
Use the following table to determine whether each of the following solutions is saturated or unsaturated.
4.75 g of PbBr2 in 100 g of H2O at 100°C
saturated
unsaturated
b
37.0 g of NaCl in 100 g of H2O at 100°C
saturated
unsaturated
c
14.3 g of CuSO4 in 100 g of H2O at 50°C
saturated
unsaturated
d
0.573 g of Ag2SO4 in 200 g of H2O at 0°C
saturated
unsaturated
3.This question has multiple parts. Work all the parts to get the most points.
Indicate whether each of the following actions will increase or decrease the rate of the dissolving of a sugar cube in water.
(a) Cooling the sugar cube-water mixture
decrease
increase
(b) Stirring the sugar cube-water mixture
decrease
increase
(c) Breaking the sugar cube up into smaller "chunks"
decrease
increase
(d) Crushing the sugar cube to give a granulated form of sugar
decrease
increase
4.This question has multiple parts. Work all the parts to get the most points.
a
Ethanol is a polar solvent and carbon tetrachloride is a nonpolar solvent. In which of these two solvents are each of the following solutes more likely to be soluble?
Kerosene, nonpolar
ethanol
carbon tetrachloride
b
Lactose, polar
carbon tetrachloride
ethanol
c
Sugar, polar
carbon tetrachloride
ethanol
d
Vitamin C, polar
carbon tetrachloride
ethanol
a
Classify each of the following solutions as saturated, unsaturated, or supersaturated based on the following observations.
Agitation of the solution produces a large amount of solid crystals.
saturated
unsaturated
supersaturated
b
Heating the solution causes excess undissolved solute present to dissolve.
saturated
unsaturated
supersaturated
Explanation / Answer
Question 01 a-Unsaturated b-supersaturation c-Unsaturated d-Unsaturation Question 03 a-decrease b-increase c-increases d-increase Question-04 a-carbon tetrachloride b-ethanol c-ethanol d-ethanol
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