2. How many molecules of potassium hydroxide would be required to completely deprotonate 2.0 liters of formic acid, at 1.5 moles per liter of HCOOH (from the above question)? A. 1.806 x 10 molecules of KOH B. 6.02 x 1023 molecules of KOH 24 C. 2.408 x 10 molecules of KOH D. 3.01 x 1024 molecules of KOH E. 1.204 x 1024 molecules of KOH 3. If carbon has an atomic mass of 12 daltons, oxygen has an atomic mass of 16 daltons, and hydrogen has an atomic mass of 1 dalton, what is the atomic mass of acetic acid (CHCOOH)? A. 32 grams per mole B. 46 grams per mole C. 60 grams per mole D. 72 grams per mole E. 96 grams per mole 4. Calculate the pH of a 0.0001 M solution of HCHO (ascorbic acid, a weak acid), with a pKa, of 4.1 (K of 7.9 x 10 M), and a pKa, of 11.8 (Ka, of 1.6 x 100 005 M). A. [log{(the square root of [(4)(1)(1.6 x 1003)+(1.6 x 10)])/2 (1.6 x 109)/2} B. [log{(the square root of [(4)(1)(7.9 x 10) + (7.9 10)])/2](7.9 10%)/2} C. [log{the square root of [(4)(1)(1.6 x 10) + (1.6 10)])/2 (1.6 10)/2} 10 D. [log {(the square root of [(4)(1)(7.9 x 10) + (7.9 x 10)])/2 (7.9 x 10%)/2} E. [log{the square root of [(4)(1)(1.6 x 105) + (1.6 x 1003])/2] (1.6 x 10)/2} 5. What is the exact pH of the above solution of ascorbic acid (0.0001 M)? A. pH = 3.404 B. pH = 12.099 C. pH = 12.319 D. pH = 12.115 E. pH = 4.238