soran university

1. Which salt is LEAST soluble at 0 ºC?
2. How many grams of sodium nitrate, NaNO3, are soluble in 100 g of water at 10 ºC?
3. When 50 grams of potassium chloride, KCl, is dissolved in 100 grams of water at 50 ºC, the solution can be correctly described as:
A. saturated
B. supersaturated
C. unsaturated
4. When 20 grams of potassium chlorate, KClO3, is dissolved in 100 grams of water at 80 ºC, the solution can be correctly described as:
A. unsaturated
B. saturated
C. supersaturated
5. At approximately what temperature does the solubility of sodium chloride, NaCl, match the solubility of potassium dichromate, K2Cr2O7?
6. A solution of potassium chlorate, KClO3, has 20 grams of the salt dissolved in 100 grams of water at 70 ºC. Approximately how many more grams of the salt can be added to the solution before reaching the saturation point?
7. A beaker containing 80 grams of lead(II) nitrate, Pb(NO3)2, in 100 grams of water has a temperature of 30 ºC. Approximately how many grams of the salt are undissolved, on the bottom of the beaker?
8. Which salt is LEAST soluble at 50 ºC?
9. How many grams K2Cr2O7 would you need to add to 100 grams of water at 80 ºC to make a saturated solution?
10. You heat a saturated solution of KClO3 from 30 ºC to 90 ºC. How much more solute were you able to add to the new saturated solution?

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asked by zagros
  1. Indicate your specific subject in the "School Subject" box, so those with expertise in the area will respond to the question.

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    posted by PsyDAG
  2. You must have graphs for solubility or tables of solubility. Without those I can't help.

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