CHE 152 OUTLINE 2^ND HOUR EXAM fall 2020

FOR THE TEST, YOU SHOULD BE ABLE TO:

• Define the Arrhenius and Bronsted definitions of acids and bases.
• Given an equation, identify the Arrhenius and Bronsted acids and bases.
• Illustrate and explain what is meant by a conjugate acid-base pair according to the Bronsted definition.
• Write the conjugate acid or base for molecule or ion.
• State and explain what makes and acid a strong or weak acid.
• Write the K_a for a weak acid and the K_b for a weak base, given the equation.
• Explain why strong acids are not equilibrium systems and why weak acids do have an equilibrium system.
• Identify the strength or weakness of an acid form the K_a and be able to arrange the acids according to their strength from K_a.
• Explain the difference between a neutral, acidic or basic solution in terms of the hydronium and the hydroxide ions.
• Calculate the hydronium or hydroxide ion concentration, given one concentration and the K_w of water.
• Determine if a solution is acidic basic or neutral, from the hydronium or hydroxide concentration.
• Find the K_a of a weak acid solution, given the [H₃O]⁺ or the [OH]^- and the initial concentration of the acid.
• Calculate the equilibrium concentrations of reactants and products of a weak acid, given the initial concentration of the acid and the equilibrium concentration of the conjugate base or the [H₃O]⁺.
• Calculate the equilibrium concentrations of a weak acid, given the initial concentration of the acid and the K_a.
• Calculate the pH, given the concentration of the acid, K_a, and the concentration of a salt of the conjugate base. (common ion effect)
• Find pH using the Henderson-Hasselbalch equation
• Define solubility product
• Write the solubility constant expression, K_sp for the reaction given the equation
• Calculate the K_sp, given the solubility of the compound.
• Calculate the solubility of a compound in moles/liter, given the K_sp.
• Determine the solubility in grams/liter of a compound given the K_sp.
• Determine if a precipitate forms, given the concentrations of the solutions being mixed and the K_sp.