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Solubility Curves (Grade 9)

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Solubility Curves

Use the solubility curve graph to answer the questions.
Solubility Chart
1. 
Which of the following has a solubility that decreases as temperature increases?
  1. [math]KCl[/math]
  2. [math]NH_3[/math]
  3. [math]KNO_3[/math]
  4. [math]Ce_2(SO_4)_3[/math]
2. 
The solubility of potassium chloride                      as its temperature                     .
  1. increases; increases
  2. decreases; decreases
  3. increases; decreases
  4. decreases; increases
3. 
Which is least soluble in water at [math]30degC[/math]?
  1. [math]KCl[/math]
  2. [math]KNO_3[/math]
  3. [math]KClO_3[/math]
  4. [math]Ce_2(SO_4)_3[/math]
4. 
Which salt is most soluble in water at [math]20degC[/math]?
  1. [math]KI[/math]
  2. [math]KCl[/math]
  3. [math]KClO_3[/math]
  4. [math]Ce_2(SO_4)_3[/math]
5. 
How many grams of [math]KClO_3[/math] can be dissolved at [math]80degC[/math]?
  1. 22 g
  2. 40 g
  3. 50 g
  4. 64 g
6. 
At what temperature will 80 grams of [math]KNO_3[/math] dissolve?
  1. [math]30degC[/math]
  2. [math]44degC[/math]
  3. [math]50degC[/math]
  4. [math]144degC[/math]
7. 
At which of the temperatures is 40 grams of [math]KCl[/math] unsaturated?
  1. [math]30degC[/math]
  2. [math]40degC[/math]
  3. [math]50degC[/math]
  4. [math]60degC[/math]
8. 
40 grams of which of the following is supersaturated at [math]10degC[/math]?
  1. [math]KI[/math]
  2. [math]NH_3[/math]
  3. [math]NH_4Cl[/math]
  4. [math]NaNO_3[/math]
9. 
[math]NaNO_3[/math] and [math]KNO_3[/math] have the same solubility at what temperature?
  1. [math]28degC[/math]
  2. [math]73degC[/math]
  3. [math]136degC[/math]
  4. [math]150degC[/math]
10. 
At what temperature is the solubility of ammonia the same as the solubility of sodium nitrate?
  1. [math]6degC[/math]
  2. [math]32degC[/math]
  3. [math]56degC[/math]
  4. [math]77degC[/math]

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