Answer Happy

Question 40 1 pts Calculate the pow of a 0.30 M solution of acetic acid (K - 1.8 10-5). O 11.37 O 8.73 5.27 none of these 2.63 D Question 41 1 pts The pain killer morphine is a weak base when added to water. The Kb is 1.6 x 10-6. What is the pH of a 5.08 x 10-M solution of morphine? 09.80 O 9.95 O none of these 5.91 0 4.05 DAN SO 0: & 7 5 6 8 R 20 T Y

D Question 42 1 pts Which one of the following salts does not give a neutral solution when it is dissolved in water? о вас all give neutral solutions OKNO NaBr O NH OH Question 43 1 pts Calculate the pH of the following aqueous salt solution: 0.91 M NaF (K, for HF = 7.24 x 104 none of these 10.90 O 5.45 03.10 8.55 HO 96 5 & 7 4 6 8 9 R T Y

Question 44 1 pts Aln) ... solution contains a conjugate acid-base pair with both the acid and the base in reasonable concentrations titrated equivalence saturated none of these buffer D Question 45 1 pts Which one of the following combinations is not a buffer solution? O NHI / (NH4)2SO4 O CH3COOH NaCH3COO OHCN / NaCN NHI / NH BI OHBr / KBr SD S UR < 0 5 Š 6 7 8 R. T Y

Question 46 1 pts Which of the following statements about titration curves is false? The equivalence point on a titration curve is the point where chemically equivalence amounts of acid and base have reacted The equivalence point will be basic when titrating a weak acid with a strong base A titration curve shows how pH changes near the equivalence point. A titration curve for titrating a strong acid/strong base will always have an equivalence point at pH - 70 all are true Question 47 1 pts In the reaction shown below, what species is oxidized? 2Nal + Br2 → 2NaBr + 12 OT O Br none of these Br2 Na 4 5 6 7 8 9 R T Т. Y