1. Solution Stoichiometry

2. We have already explored gravimetric stoichiometry (mass-to-mass) However, most industrial reactions take place in solution –Easier to manipulate and control –Many chemical reactions only occur if the reactants are in solution Solution stoichiometry (or volumetric stoichiometry) is a method of calculating the concentration of substances in solution

3. Steps to Solving Solution Stoichiometry Problems 1.Write the balanced chemical equation 2.Set up a stoich table OR 1.Write the balanced chemical equation 2.Convert given values to moles 3.Use the mole ratio to solve for unknowns

4. Example: A 10.00 mL sample of sulfuric acid reacts completely with 15.9 mL of a 0.150 mol/L potassium hydroxide solution. Calculate the molar concentration of the sulfuric acid. H 2 SO 4(aq) + 2 KOH (aq)  2 H 2 O (l) + K 2 SO 4(aq) C = 1.193 X 10 -3 mol 0.01000 L = 0.119 mol/L 0.150 mol/L n = 2.385 X 10 -3 mol KOH X 1 mol H2SO4 2 mol KOH = 1.193 X 10 -3 mol H2SO4 = 0.150 mol X 0.0159 L 1 L = 2.385 X 10 -3 mol V 0.01000 L0.0159 L

5. Practice! P. 353 #1-3 Worksheet Review: p. 358 #1-3,5,9,10