Solubilitly Flashcards
(18 cards)
What are the properties of water
Clear, colourless liquid. Freezes at 0°C, boils at 100°C.
Density of 1g/cm3.
Neutral (ph7)
Chemical formula H2O.
Is a covalent molecule.
Most ionic compounds are soluble in water.
Tell me some life facts about water
Water covers 70% of the earths surface.
All living things need water.
2/3 of your body is water.
You need 2 litres of water to replace the water you use in urine, sweat and when you breathe.
You can only live one week without water.
Solvent
The liquid in which the solute dissolves.
Solute
A soluble substance which dissolves.
Solution
A mixture of a solute dissolved in a solvent.
Insoluble
A substance that will not dissolve in a particular solvent.
Sugar (solute) + water (solvent) =
Sugar water (solution)
Copper sulfate + water =
Copper sulfate solution.
What does it mean if something is concentrated
A solution that has a lot of solute in a certain volume is said to be concentrated
What does it mean if something is dilute
A solution with only a little solute in a certain volume of water is said to be dilute.
Give an example of diffusion
Water particles attract sugar and pull them apart so they spread out and mix in the water (diffusion)
List the factors affecting the rate of dissolving
Temperature, stirring, volume of solvent, mass of solute, surface area of the solute.
What form can the solute come in
Granules, powder, cubes
What are the units of solubility
g/100g of water
Saturated solution
A solution in which no more solid will dissolve at a particular temperature.
Solubility
The mass of a solid that will saturate 100g of water at a particular temperature.
Solubility
The mass of a solid that will saturate 100g of water at a particular temperature.
What is the equation for finding the solubility of a substance
Solubility (g/100gwater) = mass of solute divide/over mass of solvent x 100
