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HOW CAN WE MAKE THIS COCOA DISSOLVE (BECOME SOLUBLE) FASTER?

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HOW CAN WE MAKE THIS COCOA DISSOLVE (BECOME SOLUBLE) FASTER?

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Stirring / Shaking

Heating

Type of solvent used (change milk for water?)

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SOLUBILITY NOTES 2021 - WITH WORKSHEETS ADDED

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The amount of solute which dissolves in solvent depends on three factors:

solute used (e.g. sugar more soluble than salt in water)

solvent used (usually we use water)

temperature (generally solutes dissolve more at higher temperatures)

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For interest sake (this post not examined)

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For interest sake (this post not examined)

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VINEGAR + BICARB OF SODA

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Factors that Affect Solubility of Solids in Liquids:

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Factors that Affect Solubility of Solids in Liquids:

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1. Nature of Solute and Solvent:

Similar substances mix well.

Like dissolves like (polar dissolves polar, non-polar dissolves non-polar substances).

2. Temperature:

Higher temperatures increase solubility.

Higher temperatures give more kinetic energy to the molecules, allowing them to overcome intermolecular bonds more easily and dissolve faster.

3. Agitation:

Stirring solids dissolve them faster.

4. Particle Size:

Smaller particles dissolve better due to larger surface area exposed to solvent.

5. Other Substances:

Other solutes can change how well a solid dissolves.

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Factors Affecting Gas Solubility in Liquids:

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Factors Affecting Gas Solubility in Liquids:

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1. Temperature:

Warmer liquids hold less gas; gas escapes more easily. Colder liquids hold more gas.

Why?: Heat gives gas molecules more energy, making them want to escape from the liquid.

2. Pressure:

Higher pressure helps more gas dissolve in the liquid.

Why?: Increased pressure pushes gas molecules into the liquid, allowing more to mix in.

3. Type of Gas:

Different gases dissolve differently; for example, carbon dioxide is better in water than oxygen.

Why?: Some gases can form stronger interactions with the liquid, making them easier to dissolve.

4. Agitation:

Stirring helps gas mix better with the liquid.

Why?: Movement breaks up gas bubbles, allowing them to mix more thoroughly with the liquid.

These factors help explain why fizzy drinks stay bubbly

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DEF:

Solubility is the maximum amount of solute that can dissolve in 100g of solvent at a given temperature.

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SOLUBILITY - Maximum amount of solute that can dissolve in 100g of solvent at a given temperature.

SOLUTION - a homogeneous mixture of two or more substances: a solute (the substance being dissolved) uniformly distributed within a solvent (the substance doing the dissolving).

SATURATED SOLUTION - a solution in which no more solute will dissolve, at a particular temperature.

Electrolyte - a substance that contains free ions, behaving as an electrically conductive medium.

Dissociation - a general process in which ionic compounds separate into smaller ions.

Dissolution/Dissolving - the process where ionic crystals break up into ions in water and getting surrounded by water molecules.

Precipitate - an insoluble solid that forms in a solution during a chemical reaction.

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SOLUBILITY CURVES (Solubility vs. Temperature)

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SOLUBILITY CURVES (Solubility vs. Temperature)

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1. What is the general trend here, showing how increased temperature affects solubility of salts in water?

2. Which compound is most soluble at 100 oC?

3. At what temperature are NaClO₃ and KNO₃ the same solubility?

4. Identify the unlabeled graph.

5. What mass of NaClO₃ will precipitate out if a saturated solution at 100 oC is cooled to 0 oC? Show all your working clearly set out. (Assume the amount of solution used contained 100 g of water.)

6. If 45,5 g of a salt is dissolved in a mass M of water, the resulting solubility is 15,3 g per 100g water. Calculate the mass M of water.

FORMULA:

solubility = mass of solute / mass of solvent    x 100

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Solubility Curves | Properties of Matter | Chemistry | FuseSchool

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SOLUBILITY = MAX SOLUTE THAT CAN DISSOLVE IN A GIVEN AMOUNT OF SOLVENT

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SOLUBILITY = MAX SOLUTE THAT CAN DISSOLVE IN A GIVEN AMOUNT OF SOLVENT

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How much solute can dissolve (be held in solution) in 100g water at a specific temperature.

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Temperature and Solubility: Solids and Gases

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SHAKE SOME SALT - CHECK SOLUBILITY SIMULATION

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SHAKE SOME SALT - CHECK SOLUBILITY SIMULATION

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An exothermic reaction is one where heat is released from a system to its surroundings. In this case, the temperature of the surroundings will increase.

An endothermic reaction is one where heat is absorbed by a system from its surroundings. In this case, the temperature of the surroundings will decrease.

Examples:
If concentrated sulfuric acid is added to water, an exothermic reaction occurs—the solution increases in temperature.

If solid ammonium nitrate is added to water, an endothermic reaction occurs—the solution decreases in temperature.

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1. Which compound is most soluble at 100 oC?

2. At what temperature are NaClO₃ and KNO₃ the same solubility?

3. Identify the unlabeled graph.

4. What mass of NaClO₃ will precipitate out if a saturated solution at 100 oC is cooled to 0 oC? Show all your working clearly set out. (Assume the amount of solution used contained 100 g of water.)

5. 45,5 g of a salt was dissolved in a mass M of water. The resulting solubility was 15,3 g per 100g water. Calculate the mass M of water.

FORMULA:

solubility = mass of solute / mass of solvent    x 100

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Join an activity with your class and find or create your own quizzes and flashcards.

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Making Soluble Salts | Acids, Bases & Alkali's | Chemistry | The Fuse School