Solubility Curves and Their Interpretation
Chemistry ⇒ Solutions and Colloids
Solubility Curves and Their Interpretation starts at 10 and continues till grade 12.
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A student adds 60 g of NaCl to 100 g of water at 80°C. According to the solubility curve, only 40 g can dissolve at this temperature. What will happen to the excess NaCl?
Define a saturated solution.
Describe how to prepare a supersaturated solution using a solubility curve.
Describe how you would use a solubility curve to determine if a solution is saturated, unsaturated, or supersaturated.
A solubility curve for NaNO3 shows that at 20°C, 88 g can dissolve in 100 g of water. If a solution at 20°C contains 70 g of NaNO3 per 100 g of water, is it saturated, unsaturated, or supersaturated?
A solubility curve shows that at 60°C, 100 g of water can dissolve 120 g of a certain salt. If a solution at 60°C contains 120 g of the salt, what type of solution is it?
A solution at 25°C contains 36 g of NaCl in 100 g of water. The solubility curve shows 36 g is the maximum at this temperature. What type of solution is this?
A solution at 70°C contains 110 g of KNO3 per 100 g of water. The solubility curve shows 130 g can dissolve at this temperature. Is the solution saturated, unsaturated, or supersaturated?
Which factor does NOT affect the solubility of a solid in a liquid?
(1) Temperature
(2) Pressure
(3) Nature of solute and solvent
(4) Stirring
Which of the following best describes a point on a solubility curve?
(1) The boiling point of the solvent
(2) The amount of solute that will dissolve at a specific temperature
(3) The freezing point of the solution
(4) The density of the solute
Which of the following best describes a supersaturated solution?
(1) Contains less solute than can dissolve
(2) Contains exactly as much solute as can dissolve
(3) Contains more solute than can dissolve
(4) Contains no solute
Which of the following is NOT a possible reason for a solubility curve to slope downward?
(1) The solute is a gas
(2) The solute is a solid
(3) The solute escapes from solution as temperature increases
(4) The solute's solubility decreases with temperature
A solution that contains less solute than the maximum amount that can dissolve at a given temperature is called a(n) __________ solution.
If a solution contains more solute than is indicated by the solubility curve at a given temperature, the solution is __________.
The point at which a solubility curve levels off indicates the __________ solubility of the substance at that temperature.
The solubility of a gas in a liquid is directly proportional to the __________ of the gas above the liquid.
True or False: A solution that contains less solute than the solubility curve indicates at a given temperature is unsaturated.
True or False: A supersaturated solution contains more dissolved solute than a saturated solution at the same temperature.
True or False: All solubility curves for solids slope upwards as temperature increases.
True or False: The solubility of a gas in a liquid increases as the temperature increases.
