5.0 Solutions

Concentrated solutions- has a large amount of

solute in a solvent Ex maple syrup

Dilute solution- has a small amount of solute in a solvent Ex Tap water

Think of apple juice: ever seen made from concentrate? This is juice where water has been taken out; dilute solutions are juice that has been watered down

Types of Solutions

Concentration tells you how much solute is

dissolved in a certain amount of solvent (ie 50 g of sugar dissolved in 100 ml of water)

See concentration demo 10 g dissolved in 50ml of water 15 g dissolved in 100ml of water 6g dissolved in 25 ml of water

Concentration

White sugar that you buy are really just sugar

crystals Sugar beets or sugar cane are boiled down

making it more concentrated as the water evaporates leaving behind the sugar crystals

Did you know?

Saturated solutions- involve a solvent that can

not dissolve any more solute Ex borax crystal ornaments

Unsaturated solutions- a solution where the solvent can dissolve more solute

Saturated solution

Activity

If a saturated solution has a concentration of

20g per 100ml of water, how many grams of the solute could be dissolved in 50 ml of water? In 400 ml of water?

Solubility is the maximum amount of solute

that can be dissolved in a solvent at a certain temperature

Three factors affect solubility1. Temperature2. Type of solvent3. Type of solute

Solubility

Supersaturated- add a solute (ie sugar) to hot

water and make a saturated solution. The let the solution cool- what happens? Solution will contain more solute than a

saturated solution normally would

For a solute to dissolve in a solvent, it has to

be able to bind with the solvent particles If the solute particles do not bind with the

solvent particles than the solute is said to be ‘insoluble’

Disappearing Nail Polish

Activity