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Published byAndrea Payne Modified over 8 years ago
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Solubility Curves The amount of a solute that will dissolve is a solvent depends upon the temperature of the solution.
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KNO 3 dissolved in water The data to the right is how many grams of KNO 3 solid that will dissolve in 100ml of water at different temperatures.The data to the right is how many grams of KNO 3 solid that will dissolve in 100ml of water at different temperatures. TemperatureMass 0 o C15g 10 o C23g 20 o C34g 30 o C47g 38 o C60g
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KNO 3 dissolved in water This graphs shows the relationship between how much solid potassium nitrate will dissolve in water at different temperatures. Notice how it is not a straight line, but curves upward. The hotter the water, the more potassium nitrate will dissolve.
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Question? How much Potassium Nitrate will dissolve at 25 degrees Celsius? Follow the line up from 25 degrees and then over to the mass.
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Solubility Curve of NH 3 Notice how the curve is different from the solid potassium nitrate. The reason is simple, ammonia (NH 3 ) is a gas. Therefore it is less soluble in hot water.
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Saturated Solution Any point on the line indicates a saturated solution. Saturated means the solvent has dissolved as much solute as possible.
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Unsaturated Solution The red area ofThe red area of the graph the graph represents an represents an unsaturated unsaturated solution. Less solution. Less solute is dissolved solute is dissolved than a saturated than a saturated solution. solution.
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Supersaturated Solution The red area ofThe red area of the graph the graph represents a represents a supersaturated supersaturated solution. More solution. More solute is dissolved solute is dissolved than a saturated than a saturated solution. solution.
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Use this graph to help you answer the rest of the questions.
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