Question 1
0.272 g of a monoprotic acid (MW = 189 g/mol) is dissolved in water to produce 25.0 mL of a solution with pH = 4.93. Determine the ionization constant of the acid.
◦ 4.1 × 10
-8 ◦ 1.4 × 10
-10 ◦ 2.1 × 10
-4 ◦ 2.8 × 10
-7 ◦ 2.4 × 10
-9 Question 2
0.375 g of a monoprotic acid (MW = 245 g/mol) is dissolved in water to produce 25.0 mL of a solution with pH = 3.28. Determine the ionization constant of the acid.
◦ 8.56 × 10
-3 ◦ 4.5 × 10
-6 ◦ 7.4 × 10
-5 ◦ 4.5 × 10
-3 ◦ 2.3 × 10
-2