Chemistry on acid base and salts

Exercise1. Calculate the change in pH when 10.0 ml of a 0.100 M solution of NaOH is added to 1.00 L of a solution that is 1.00 M in sodium acetate and 1.00 M in acetic acid2. Calculate the percentage cocaine existing as free base in solution of cocaine hydrochloride at the following pH:a) 4.6 b) 8.0  c)12.03. The pKb of 200 mL 0.1M pilocarpine (RNH2) is7.5 at 25 degrees C,I) What is the percent of free base present at pH 5.8 and pH 11.4 ?II) What is the acidity constant of the conjugate acid of pilocarpine at 25 degrees C?III) How may a sample of pilocarpine be rendered more water soluble?IV) Calculate the pH of the 0.1 M pilocarpine solutionV) Calculate the pH after 100 mL of 0.1 M HCl is added to the above pilocarpine solution4.  Please recommend a good study text or Manual if you can on Acid Base and Salt that covers the above equationsPlease kindly show how answers were arrived at stepwise