Solutions (Grade 10)
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Based on the solubility curve shown below, how does the solubility of KI (s) change as the temperature decreases?
- The solubility decreases.
- The solubility increases.
- The solubility remains the same.
- The solubility increases and decreases.
A saturated solution of which of the following is least soluble at 20ºC?
At 100ºC, how many grams of NaCl are necessary to create a saturated solution?
- 20 g
- 30 g
- 40 g
- 50 g
A solution of NaCl contains 68 g of NaCl in 200 g of water at 100ºC. How many more grams of NaCl need to be added to create a saturated solution at this temperature?
- 12 g
- 2 g
- 22 g
- 32 g
How can a solution containing 125 g of KI dissolved in 100 g of water at 10ºC be classified?
- none of the above
How many grams of ammonia must be dissolved in 50 g of water to create a saturated solution?
- 8 g
- 16 g
- 4 g
- 24 g
A solution containing which of the following would be affected by a change in pressure?
- CO (g)
- KCl (s)
- NaCl (s)
- KF (s)
Which of the following conditions is sufficient to increase the solubility of a solid in water?
- high pressure, only
- low temperature and low pressure
- low temperature and high pressure
- high temperature
Name one solution that is less soluble than NaCl is at 90ºC.
At 5ºC, compare the masses required to create a saturated solution of ammonia and to create a saturated solution of sodium nitrate.