Question

Acid/Base Equilibrium - Weak Acids/Bases

1. Estimate the initial [HClO] in an aqueous solution in which the [OCl^-] is 0.0000114 M at equilibrium (make an exact calculationassuming that initial concentration is not equal to the equilibrium concentration).

(Constant = K_a=3.50×10^-8)

HClO = OCl^- + H⁺

_________________ M 2. Calculate the [C6H5CO2-] of a 6.74×10-3 M solution of the weak acid C6H5CO2H (make an exact calculation assuming that initial concentration is not equal to the equilibrium concentration). (Constant = Ka=6.30×10-5) C6H5CO2H = C6H5CO2- + H+

^{_________________ M}

3. Calculate the molar concentration of H⁺ ion of a 1.31×10^-2 M solution of the weak acid HClO (make an exact calculationassuming that initial concentration is not equal to the equilibrium concentration). Round your answer to 3 significant digits.

(Constant = K_a=3.50×10^-8)

HClO = OCl^- + H⁺

Answer 1