Practice: How many milliliters of 0.325 M HCl are needed to react with 16.2 g of magnesium metal?

2 HCl (aq) + Mg (s) → MgCl_{2} + H_{2} (g)

**Solution Stoichiometry** deals with stoichiometric calculations in solutions that involve volume and molarity.

Concept #1: Solution Stoichiometry

Use the solution stoichiometric chart when dealing with calculations involving molarity and/or volume.

Example #1: How many moles of hydrogen gas were produced when 38.74 mL of 0.275 M H2O reacts with excess sodium?

Practice: How many milliliters of 0.325 M HCl are needed to react with 16.2 g of magnesium metal?

2 HCl (aq) + Mg (s) → MgCl_{2} + H_{2} (g)

Practice: What is the molar concentration of a hydrobromic acid solution if it takes 34.12 mL of HBr to completely neutralize 82.56 mL of 0.156 M Ca(OH)_{2}?

2 HBr (aq) + Ca(OH)_{2} (aq) → CaBr_{2} (aq) + 2 H_{2}O (l)

Practice: Consider the following balanced chemical equation:

H_{2}O+ 2 MnO_{4}^{–} + 3 SO_{3}^{2-} → 2 MnO_{2} + 3 SO_{4}^{2-}+ 2 OH^{–}

How many grams of MnO_{2} (MW: 86.94 g/mol) will be created when 25.0 mL of 0.120 M MnO_{4}^{–} (MW: 118.90 g/mol) reacts with 32.0 mL of 0.140 M SO_{3}^{2-} (MW: 80.07 g/mol).