1. Solution Chemistry Notes 

2. Importance of Solutions
In nature, it is rare to find pure solids, liquids or gases; most substances are mixtures
Most elements and most compounds of interest are solids at RT; however the rxn rate between solids is very slow
In the lab, most chemical reactions are carried out by dissolving solids in liquid solvents to increase the # of collisions and hence the rxn rates

3. Review of Terms
A mixture is composed of two or more substances physically combined.
Mixtures can either be
homogeneous (uniform throughout)
heterogeneous (non uniform)

4. Definition of a “Solution”
A solution is a homogeneous (uniform) mixture of a solute and a solvent.
Everyday solutions:
Let’s examine 4 different solutions, with their solutes and solvents.

5. Solution = Solute + Solvent

6. Relationships Solute: present in ___________ amount
Solvent: present in __________ amount

7. Solution Solute Solvent
Salt Water NaCl H2O
Which is present in the smaller amount?
Which is present in the larger amount?

8. Solution Solute Solvent
Carbonated Water CO H2O
Which is present in the smaller amount?
Which is present in the larger amount?

9. Solution Solute Solvent
Air O2 (+ others) N2
Which is present in the smaller amount?
Which is present in the larger amount?

10. Solution Solute Solvent
Gold Jewelry Ag, Cu Au
Which is present in the smaller amount?
Which is present in the larger amount?

11. So, next time you go swimming, it’s really just chemistry. 