Use the same skills to read a solubility graph with multiple compounds shown.

Source: National Archives and Record Administration

Sample Reading of the Solubility Table

At 20°C, 34 grams of KCl will just saturate 100 grams of H2O. The solubility of KCl at 20°C is 34 grams NaCl per 100 grams H2O.
  1. A solution of potassium chlorate, KClO3, has 20 grams of the salt dissolved in 100 grams of water at 70 °C. Approximately how many more grams of the salt can be added to the solution before reaching the saturation point?
    1. Interactive popup. Assistance may be required. 60 grams X Incorrect. Try again.Close Pop Up
    2. Interactive popup. Assistance may be required. 30 grams X Incorrect. Try again.Close Pop Up
    3. Interactive popup. Assistance may be required. 10 grams
      ✓ Correct!
      Approximately 10 gramsClose Pop Up
    4. Interactive popup. Assistance may be required. 80 grams X Incorrect. Try again.Close Pop Up
  2. At approximately what temperature does the solubility of sodium chloride, NaCl, match the solubility of potassium dichromate, K2Cr2O7?
    1. Interactive popup. Assistance may be required. 60 °C
      ✓ Correct!
      60 degrees CelsiusClose Pop Up
    2. Interactive popup. Assistance may be required. 30 °C X Incorrect. Try again.Close Pop Up
    3. Interactive popup. Assistance may be required. 83 °C X Incorrect. Try again.Close Pop Up
    4. Interactive popup. Assistance may be required. 50 °C X Incorrect. Try again.Close Pop Up
  3. Which salt is LEAST soluble at 50 °C?
    1. Interactive popup. Assistance may be required. KNO3 X Incorrect. Try again.Close Pop Up
    2. Interactive popup. Assistance may be required. K2Cr2O7 X Incorrect. Try again.Close Pop Up
    3. Interactive popup. Assistance may be required. KClO3 X Incorrect. Try again.Close Pop Up
    4. Interactive popup. Assistance may be required. Ce2(SO4)3
      ✓ Correct!
      Cerium SulfateClose Pop Up
  4. Which of these salts decreases in solubility as the temperature increases?
    1. Interactive popup. Assistance may be required. K2Cr2O7 X Incorrect. Try again.Close Pop Up
    2. Interactive popup. Assistance may be required. Ce2(SO4)3
      ✓ Correct!
      Cerium Sulfate Close Pop Up
    3. Interactive popup. Assistance may be required. KClO3 X Incorrect. Try again.Close Pop Up
    4. Interactive popup. Assistance may be required. KNO3 X Incorrect. Try again.Close Pop Up
  5. A beaker containing 80 grams of lead(II) nitrate, Pb(NO3)2, in 100 grams of water has a temperature of 30 °C. Approximately how many grams of the salt are undissolved on the bottom of the beaker?
    1. Interactive popup. Assistance may be required. 66 grams X Incorrect. Try again.Close Pop Up
    2. Interactive popup. Assistance may be required. 80 grams X Incorrect. Try again.Close Pop Up
    3. Interactive popup. Assistance may be required. 14 grams
      ✓ Correct!
      Approximately 14 gramsClose Pop Up
    4. Interactive popup. Assistance may be required. 20 grams X Incorrect. Try again.Close Pop Up