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