1. Solution chemistry
What are solutions?
1. a mixture of 2 or more substances
2. that is uniform throughout (homogeneous)
Individual parts can’t be seen
Examples:
gas in gas
gas in liquids
liquids in liquids
solid in liquid
solid in solid

2. Terms:
Solvent
the substance that dissolves something else (like water)
Solute
the substance that dissolves (like salts)

3. 3. Molarity (M)
Expresses how many moles of solute is dissolved in 1.00 liters of solution
Ex: The solution is .25 M HCl. This means that there are .25 moles of solute in 1.00 liters of solution
This is the way in which we will express concentration.

4. How would you make a .250 M NaCl solution?
1.Mass out .25 moles NaCl…
Note: .25 moles g/1 mole NaCl
(Mass out 14.6 g of NaCl)
2. Add water until you have reached the mark on the volumetric flask.

5. The Math
The equation
1. How many grams of NaOH are there in 400. ml of a 0.40 M solution?

6. How many moles of HCl are there in 10.0 ml of a 6.0 M solution?
Describe how to make 200. ml of a 0.50 M solution of NaOH