For the following problems you need to know the ratio of the

For the following problems, you need to know the ratio of the diluent to the sample aliquot. For instance, if you are making a 1:20 dilution, the ratio of diluent to aliquot will be 1 unit less than the dilution factor, i.e., 20 parts total, 19 parts diluent, 1 part sample aliquot. 6) You want 1 liter of 0.1 M NaCl, and you have 4 M stock solution. How much of the 4 M solution and how much dH2O will you measure out for this dilution?

Solution

M₁ V₁ = M₂ V₂

4 X V₁ = 0.1 X 1000 ml

V₁ = 25 ml.

Hence 25 ml of 4 M of NaCl is added to 975 ml of d water to create 1 liter 0.1 NaCl solution.