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0/2 pts Question 7 Which of the following will form an acidic aqueous solution? CaCl2 KI...
D Question 7 10 pts It is desired to buffer a solution at pH - 4.30. What molar ratio of CH3COOH to NaCH3COO should be used? The Ka for CH3COOH is 1.8 x 10-5. 10 pts D | Question 8 How much NH4CI must be added to 2.00 liters of 0.26 M aqueous ammonia to give a solution with pH 8.55? Assume no volume change due to the addition of NH4CI. The Kb of ammonia is 1.8 x 105, and...
Question 7 3 pts Which of the following best describe an aqueous solution of Ca(NO3)2? O acidic salt O basic salt not a salt O neutral salt
Incorrect Question 4 0/4 pts Which of the following is the Arrhenius definition of an acid? A substance that is an H* donor A substance that produces OH ions in aqueous solution. A substance that is an H* acceptor. A substance that is an OH donor. A substance that produces Htions in aqueous solution. Incorrect Question 5 0/4 pts Which of the following is the Arrhenius definition of a base? A substance that is an H* donor. A substance that...
Incorrect Question 21 0/4 pts In an aqueous solution that is basic, (H30*) is_ than(OH). than 1.0 x 10? and O less; greater greater;less greater, greater O less: less . None of these
Question 1 2 pts Which is the most acidic hydrogen in the following compound? 0= .CN 11 H Н III O III O IV OV
Question 32 3 pts Calculate the pH of an aqueous solution which has a [H3O+] = 3 x 10-'M. 0 4.5 0 6.5 O 7.5 O 5.5 8.5
D Question 17 4 pts Calculate the [H3O+] of each aqueous solution with the following (OH). NaOH solution with (OH'] = 1.0 x 102 [Choose] [H3O+] - ? [Choose] aspirin with (OH') - 1.8 x 10-11 M [H30*] ? [Choose] milk of magnesia with (OH-) - 1.0x 105M [H₃O+]=? sea water with (OH) - 2,5 x 10M (H.0"-
0/ 1 pts Question 2 During a certain titration, 35.0 mL of 0.175 M aqueous sulfuric acid was required to exactly neutralize 49.0 mL of sodium hydroxide. Determine the molarity of the base. H2SO4 (aq) + 2NaOH(aq) + 2 H2O (0) + Na2SO4 (aq) [balanced] 0.125 M 6.00 x 10 M 0.250 M 0.175 M 0.600 M 2ct Question 6 0/1 pts Calculate the pressure exerted by 5.12 grams of chlorine gas in a 850 mL sealed flask at 27.0°C....
Question 28 3 pts What is the pH of an aqueous solution after 10.0 mL of 0.20 M NaOH is added to a 35.0 mL of 0.30 MHCIO? 05.12 O 2.77 O 3.48 6.89 lonization Constants for Acids at 25°C Name Formula Kai К2 Kaz Acetic Arsenic 1.0 x 107 3.0 x 10-12 Arsenous Ascorbic 1.6 x 10-12 Benzoic Boric HC2H302 H₂A504 НАО H2C8H08 HG,HgO2 H803 HC H102 H.CO, HC H20201 HCIOZ HyCH07 HCNO Butanol Carbonic 5.6 x 10-11 Chloroacetic...
need help with #5,6&,7 Question 5 1.5 pts Which of the following substances form both ions and molecules in solution? CH3OH LI2CO3 o HClO4 Sr(OH)2 o H3PO4 Question 6 1.5 pts What are the spectator ions in the reaction between aqueous ammonia and hydrofluoric acid? ammonia fluoride ion o ammonium ion o ammonium and fluoride ions There are no spectator ions. Question 7 3.5 pts The pH of a solution of barium hydroxide is 12.53. How many milliliters of this...