Question

1) A 10.00 ml sample of an aqueous solution of calcium hydroxide is neutralized by 20.00 ml of 0.02000 M NHO₃(aq). What is the molarity of the calcium hydroxide solution? Enter only a numerical value, do not enter units.

2) Suppose you titrate 80.0 mL of 2.00 M NaOH with 20.0 mL of 4.00 M HCl. What is the final concentration of OH^- ions. Enter only a numerical value, do not enter units.

3) Suppose a solution is prepared by dissolving 15.0 g NaOH in 0.150 L of 0.250 M nitric acid. What is the final concentration of OH^- ions in the solution after the reaction has gone to completion. Assume that there is no volume change when adding the grams of NaOH. Enter only a numerical value, do not enter units.

4) A monoprotic acid is an acid that donates a single proton to the solution. Suppose you have 0.140 g of a monoprotic acid dissolved in 35.0 mL of water. This solution is then neutralized with 14.5 mL of 0.110 M NaOH. What is the molar mass of the acid? Express your answer in g/mol. Enter only a numerical value, do not enter units.

5) Which combination of name and formula is NOT correct.

                   a) Barium hydroxide, Ba(OH)₂(aq)

b) Potassium peroxide, K₂O₂(s)

                   c) Phosphoric acid, H₃PO₄(aq)

                   d) Iodic acid, HI(aq)

                   e) Perchloric acid, HClO₄(aq)

Answer 1