Unit 12 Solubility Curves Worksheets With Answer Keys Page 2
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6UNIT 12 - SOLUTIONS
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7.) Which two substances have the same solubility at 68
C? What is the solubility?
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8.) Which two substances have the same solubility at 94
C? What is the solubility?
9.) For each of the following, indicate the temperature at which the solution described would be
saturated.
(Assume all are dissolved in 100 grams of water.)
(A) 30 grams of NH
Cl
4
(B) 130 grams of NaNO
3
(C) 50 grams of Na
SO
2
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(D) 20 grams of KNO
3
(E) 40 grams of KCl
(F) 60 grams of NH
3
10.) For each of these, indicate how many grams of solute (per 100 grams of water) will dissolve.
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(A) NaNO
at 70
C
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(B) NH
Cl at 50
C
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(C) KI at 20
C
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(D) KClO
at 90
C
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11.) At 40
C, how many grams of NaNO
will make a saturated solution if the NaNO
is added to 100
3
3
grams of water?
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12.) At 80
C, how many grams of KCl can be dissolved in 200 grams of water?
13.) At what temperature will 10 grams of NH
dissolve completely in 100 grams of water to make a
3
saturated solution?
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14.) At 40
C, how many grams of KNO
can be dissolved in 300 grams of water?
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15.) At 55
C, how many grams of NaNO
can be dissolved in 50 grams of water?
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16.) At 80
C, you have a saturated solution of KClO
. How many grams of solid precipitate will form if
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the solution is cooled to 50
C?
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17.) How many grams of NaNO
precipitate will form if a saturated solution at 70
C is cooled to 10
C?
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Molarity, Molality, & Dilutions Worksheet
1.) What is the molarity of a solution in which 58.5 grams of NaCl are dissolved in 1.0 L of solution?
2.) What is the molarity of a solution in which 10.0 grams of AgNO
is dissolved in 500. mL of solution?
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3.) How many grams of KNO
should be used to prepare 2.00 L or a 0.500 M solution?
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4.) To what volume should 5.0 grams of KCl be diluted in order to prepare a 0.25 M solution?
5.) How many grams of CuSO
are needed to prepare 100. mL of a 0.10 M solution?
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