...Dilution

When two Solutions are mixed, the concentration changes.
To dilute is the process of decreasing the concentration by adding a solvent (usually water)
*The amount of solute does not change
Because concentration is mol/Lwe can write:
C= n/v or n=(c)(v) meaning (C)(V)=(C2)(V2)
C= Concentration (M)
V= Volume (L)

Example:
Determine the concentration when 200mL of 0.13M H Cl is diluted to a final volume of 300mL
CV=C2V2
(.13M)(.200L)=C2(.300L)
C2(concentration)=0.087M