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# ASAP Show all workout and answer all parts ( Im just reviewing for AP exams so its not graded, but I want it to help me.

A weak acid, HZ, has a Ka value of 6.52 x 10-5.

(a) Write the reaction of HZ with water.

(b) Write the equilibrium expression for the reaction of HZ with water.

(c) Calculate the pH of a 0.150 M solution of HZ.

(d) The Y- ion reacts with water to form HY and hydroxide ion, as shown in the following equation.

Y- (aq) + H2O (l)  HY (aq) + OH- (aq)

Given that [OH-] is 1.77 x 10-5 M in a 0.480 M solution of NaY, calculate each of the following:

(i) The value of Kb for the Y- ion.

(ii) The value of Ka for HY.