Dilluting Solutions to Prepare Workable Solution Jan 1st

-Chemicals are shipped around the world in their most concentrated forms.( solids, concentrated acids, etc)
If they were not, we should be shipping lots of water along with the chemicals, which is less cost effective.
-Thus, we need to be able to make solutions of any concentration.
-Mole of solute is constant. ( Difference is that there is more H2O in the less concentrated solution)

Moles solute before= Moles solute after
or in terms of Molarity & Volume in L
M1L1=M2L2
"1"= before      "2"= after

Ex. I have                                                  I need
  1.00L of 16.0M HCl                            0.400L of 2.00M HCl

    M1L1=M2L2

16.0×L1=2.00×0.400
L1= 0.05 L                  0.400-0.05=0.35L
Take 0.05of 16.0 M  HCl and add  0.35L water.