Assessment Objectives

Detailed Breakdown: Stoichiometry

• Define molar mass ($M$), empirical formula, molecular formula, and limiting reactant.
• State Avogadro's law for gases.
• Calculate the mass of product formed when $50\text{ g}$ of Methane is burned in excess oxygen using stoichiometric ratios.
• Solve gas law problems using $PV = nRT$ and the combined gas law.
• Determine the empirical and molecular formulas of a compound from elemental percentage composition or combustion data.
• Calculate concentration and volume in acid-base titrations ($n = C \times V$).
• Determine the limiting reactant in a reaction where specific masses or volumes of all reactants are provided.
• Analyze experimental percentage yield and suggest reasons for discrepancies from 100%.
• Use back-titration data to determine the purity of an unknown solid sample.