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Solutions Warmup
Short Answer
1.
Solubilty of KClO3 in water, g per 100 g H2O
g/100 g
150
140
130
120
110
100
90
80
70
60
50
40
30
20
10
10
20
30
40
50
60
70
80
90
deg C
What is the solubility of KClO3 in water at 36 deg?
2. Vocabulary:
a. The thing that does the dissolving____________.
b. The thing that gets dissolved ___________.
3. List three factors that effect solubility
__________,
__________,
__________
4. List three factors that effect rate of dissolving
____________,
____________,
____________
5. List three characteristics of solutions
__________, __________, __________
6. How can you identify a gas by its solubility graph?
.
7. Why won’t oil and water form a solution?
.
8. What does immiscible mean?
.
9. Which solvent will dissolve Fe2(CO3)3 ?
water or benzene
10. Which solvent will dissolve fingerprint marks(oil) ?
water or chloroform
Solutions Warmup
Answer Section
SHORT ANSWER
1. ANS:
solubility = 14.3 g per 100 g water
molality = moles per kg solvent
molality= sol/100*10(100’s/kg)/molarmass= 1.12 m
molality= 14.3/100*10(100’s/kg)/127.5495= 1.12 m
PTS: 1
2. ANS:
solvent
solute
PTS: 1
3. ANS:
temperature
molecular mass
polarity of solvent and solute (same ionic polar ok ionic nonpolar notok)
PTS: 1
4. ANS:
temperature
agitation
particle size
PTS: 1
5. ANS:
Homogeneity
absense of settling
particles will subdivide (dissolve)
PTS: 1
6. ANS:
it will have a negative slope (decrease with increase in temperature)
PTS: 1
7. ANS:
The polarity of water “binds” molcules together, density of oil causes it to rise to top.
PTS: 1
8. ANS:
Liquids that do not mix together, like oil and water.
PTS: 1
9. ANS:
water, because
like dissolves like
polar or ionic ok
nonpolar with polar of ionic not ok
nonpolar - nonpolar ok
PTS: 3
10. ANS:
water, because
like dissolves like
polar or ionic ok
nonpolar with polar of ionic not ok
nonpolar - nonpolar ok
PTS: 3