Notes: FACTORS THAT AFFECT SOLUBILITY and FACTORS AFFECTING RATE OF SOLUTION
The solubility of a solute is: the maximum amount of solute that can dissolve in a certain amount of solvent or solution at a certain temperature.
MAIN FACTORS THAT AFFECT SOLUBILITY:
Nature of the solute and solvent – The amount of solute that dissolves depends on what type of solute it is. While only 1 gram of lead (II) chloride can be dissolved in 100 grams of water at room temperature, 200 grams of zinc chloride can be dissolved. This means that a greater amount of zinc chloride can be dissolved in the same amount of water than lead II chloride.
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Temperature -- Generally, an increase in the temperature of the solution increases the solubility of a solid solute. For example, a greater amount of sugar will dissolve in warm water than in cold water. A few solid solutes, however, are less soluble in warmer solutions. For all gases, solubility decreases as the temperature of the solution rises. An example of this is Soda. The solubility of the carbon dioxide gas decreases when a soda is warm, making the soda flat.
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Pressure -- For solid and liquid solutes, changes in pressure have practically no effect on solubility. For gaseous solutes, an increase in pressure increases solubility and a decrease in pressure decreases solubility. Example: When the cap on a bottle of soda pop is removed, pressure is released, and the gaseous solute bubbles out of solution. This escape of a gas from solution is called effervescence.
FACTORS THAT AFFECT THE RATE OF SOLUTION:
The rate of solution is: a measure of how fast a substance dissolves.
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Notes: FACTORS THAT AFFECT SOLUBILITY and FACTORS AFFECTING RATE OF SOLUTION
The solubility of a solute is: the maximum amount of solute that can dissolve in a certain amount of solvent or solution at a certain temperature.
MAIN FACTORS THAT AFFECT SOLUBILITY:
Nature of the solute and solvent – The amount of solute that dissolves depends on what type of solute it is. While only 1 gram of lead (II) chloride can be dissolved in 100 grams of water at room temperature, 200 grams of zinc chloride can be dissolved. This means that a greater amount of zinc chloride can be dissolved in the same amount of water than lead II chloride.
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Temperature -- Generally, an increase in the temperature of the solution increases the solubility of a solid solute. For example, a greater amount of sugar will dissolve in warm water than in cold water. A few solid solutes, however, are less soluble in warmer solutions. For all gases, solubility decreases as the temperature of the solution rises. An example of this is Soda. The solubility of the carbon dioxide gas decreases when a soda is warm, making the soda flat.
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Pressure -- For solid and liquid solutes, changes in pressure have practically no effect on solubility. For gaseous solutes, an increase in pressure increases solubility and a decrease in pressure decreases solubility. Example: When the cap on a bottle of soda pop is removed, pressure is released, and the gaseous solute bubbles out of solution. This escape of a gas from solution is called effervescence.
FACTORS THAT AFFECT THE RATE OF SOLUTION:
The rate of solution is: a measure of how fast a substance dissolves.
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FOOD HYGIENE RATING SCHEME APPEAL FORM NOTES
MODULE SPECIFICATION IMPORTANT NOTES – PLEASE READ
NOTES THIS IS A SAMPLE CONSTITUTION FOR
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