Dilution Problems (Section 13.7)
Given: M1 V1 = M2 V2
1. If you wish to dilute 250 mL of 1.5 M Na2SO4 down to a concentration of 0.50 M, what would be the final volume of
the new solution?
2. How would you dilute a 1.0 M solution of NaOH to a final concentration of 0.60 M and a final volume of 50.0 mL?
3. 70.0 mL of a 0.14 M glucose solution is diluted with 130.0 mL of water. What is the final concentration?
Practice with precipitation reactions:
1. Of the following combinations, find one that will form a precipitation reaction, when mixed together:
a) Li3PO4(aq) + NaBr (aq)
b) (NH4)3PO4 (aq) + LiCl (aq)
c) Li3PO4(aq) + CaBr2 (aq)
2. Using the combination that did give a reaction, write the following equations, below. Don’t forget states of matter on
everthing, and to put ionic charges on all loose ions:
Molecular eqn:
Total (complete) ionic eqn:
Net ionic eqn: