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Review important concepts such as gas laws, stoichiometry, intermolecular forces, phase changes, and solid types. Practice converting units, solving problems, and understanding key relationships.
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CHEM 112 Spring 2011 Exam 1 Review
Things you must know???? • Converting units of pressure. • Using the empirical gas laws. • Deriving empirical gas laws from the ideal gas law. • Using the ideal gas law. • Relating gas density and molecular weight. • Solving stoichiometry problems involving gases. • Calculating partial pressures and mole fractions. • Calculating the amount of gas collected over water. • Calculating the rms speed of gas molecules. • Calculating the ratio of effusion rates of gases. • Using the van der Waals equation.
Important! • Calculating the heat required for a phase change of a given mass of substance. • Calculating vapor pressures and heats of vaporization. • Relating the conditions for the liquification of a gas to the critical temperature. • Identifying intermolecular forces. • Determining relative vapor pressure on the basis of intermolecular attraction. • Identifying types of solids.
Important! • Determining the relative melting points based on types of solids. • Determining the number of atoms per unit cell. • Calculating atomic mass from unit-cell dimension and density. • Calculating unit-cell dimensions from unit-cell type and density.