Chapter: Solutions, Acids, and Bases Section 2: Solubility and Concentration

Solubility and Concentration How much can dissolve? SOLUBILITY (sol yuh BIH luh tee) is the maximum amount of a solute that can be dissolved in a given amount of solvent at a given temperature.

Comparing Solubilities Solubility and Concentration Comparing Solubilities The amount of a solute that can dissolve in a solvent depends on the nature of these substances.

Mathematically this means: Solubility and Concentration The CONCENTRATION describes how much solute is present in a solution compared to the amount of solvent. Mathematically this means: How much solute <=> measured in grams Amount of solvent <=> measured in ml Comparison <=> ratio Solute/solvent <=> grams/milliliter

Precise Concentrations Solubility and Concentration Precise Concentrations Concentrations of solutions can be described precisely, such as the percentage by volume of the solute.

Types of Solutions Saturated Solutions Solubility and Concentration Types of Solutions Saturated Solutions A SATURATED SOLUTION is a solution that contains all the solute it can hold at a given temperature.

Solubility and Concentration Saturated Solutions The table shows the amounts of a few solutes that can dissolve in 100 g of water at different temperatures to form saturated solutions.

Solubility and Concentration Solubility Curves You can use a SOLUBILITY CURVE to determine how much solute will dissolve at any temperature given on the graph.

Solubility and Concentration Solubility Curves An UNSATURATED SOLUTION is any solution that can dissolve more solute at a given temperature.

Where on the Solubility Curve would one find an Unsaturated Solution? Q1 Where on the Solubility Curve would one find an Unsaturated Solution? Above the line of the curve On the line of the curve Below the line of the curve [Default] [MC Any] [MC All]

Solubility and Concentration A SUPERSATURATED SOLUTION is one that contains more solute than a saturated solution at the same temperature.

Supersaturated Solutions Solubility and Concentration Supersaturated Solutions Supersaturated solutions are unstable.

What is Solubility? Maximum amount of a solute that can be dissolved in a given amount of solvent at a given temperature. Describes how much solute is present in a solution compared to the amount of solvent. A solution that contains all the solute it can hold at a given temperature.

A(n) ___________ solution is any solution that can dissolve more solute at a given temperature. electrolyte saturated supersaturated unsaturated

Which is true of a supersaturated solution? Q4 Which is true of a supersaturated solution? Conducts electricity in water Can dissolve more solute at a given temperature Cannot form crystals when additional solute is added unstable

Approximately how many grams of NaCl will dissolve to create a Saturated solution at 10°C?

Approximately how many grams of Potassium bromide is needed to create a Saturated solution at 60°C?

Approximately how many grams of Potassium nitrate is needed to create a Saturated solution at 100°C?

At what temperature will 120 g of Sodium chlorate form a saturated solution?

At what temperature will 120 g of Potassium nitrate form a saturated solution? 98°C 88°C 78°C 68°C

At what temperature will 78 g of Sodium chlorate form a saturated solution? This solution is not possible.