Question

ire anf eisures are complete 1. Caleulate the concentration (in M) of hydroxide ions in a solution at 25.0°C with a pOH of 4.223. D)599 x ǐo-19 E) 1.00 x 10- A)5.98 × 10-5 2. An aqueous solution C)1.67 x 104 will produce an acidic solution D) NHBr B) 1.67× 10-10 E) MgCl 12.0 pH of 100 solution 80 in flask 6.0 4.0 2.0 Equivalence Point 5 10 15 20 25 30 35 40 45 mL of 0.115 M NaOH added to flask 3. A 25.0 ml sample of a solution of an unknown compound is titrated with a 0.115 M NaOH solution. The titration curve above was obtained. The unknown compound is A) a strong acid B) a strong base C) a weak acid D) a weak base E) neither an acid nor a base 4. In the following reaction BF acts asa A) BrOnsted-Lowry acid B) BrØnsted-Lowry base C) Arrhenius base D) Lewis acid E) Lewis base 5. What change will be caused by addition of a small amount of HCI to a solution containing fluoride ions and hydrogen fluoride? A) The concentration of hydronium ions will increase significantly B) The concentration of fluoride ions will increase as will the concentration of hydronium ions. C) The concentration of hydrogen fluoride will decrease and the concentration of fluoride ions will increase. D) The concentration of fluoride ion will decrease and the concentration of hydrogen fluoride will increase. E) The fluoride ions will precipitate out of solution as its acid salt.