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Practice ProblemATTEMPT
Determine the pOH of a solution at 25°C in which the hydroxide ion concentration is
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Chemistry
- Calculate the percent ionization of ascorbic acid (HC6H7O6) in solutions of each of the following concentrations (Ka = 8.0e-05.)(a) 0.114 M (b) 0.438 M (c) 0.869 Marrow_forwardCalculate the percent ionization of hypobromous acid (HBrO) in solutions of each of the following concentrations (K₂ = 2.5e-09.) (a) 0.181 M (b) 0.455 M (c) 0.694 M % % %arrow_forwardCalculate the pH of the solution resulting from the addition of 20.0 mL of 0.100 M NAOH to 30.0 mL of 0.100 M HNO3. 16 (a) 1.35 (b) 1.70 (c) 1.95 (d) 2.52 (e) 2.80arrow_forward
- If the pH of a solution is equal to 3, the hydroxide ion concentration is _____. (A)1 x 1O11 M(B)1 x 103 M(C)1 x 10-3 M(D)1 x 10-11 Marrow_forwardDetermine the pH of the solution resulting from mixing a solution of 154 mL of HNO2 (Ka = 5.62e – 04) at a 1.800 M concentration, with 115 mL of a 1.400 M solution of C'sOH ? O (a) 3.250 O (b) 1.696 O (c) 3.392 O (d) 3.192 O (e) 0.308arrow_forwardWhat mass of HI should be present in 0.250 L of solution to obtain a solution with pH value of 2.85. (A) 1.8 g (B) 0.035 g (C) 0.045 g (D) 0.055 garrow_forward
- 7. Aniline (C6H5NH2) has a Kb of 3.8 x 10-10. What is the pH of a 0.150 M aniline solution? (a) 5.12 (b) 8.88 (d) 13.18 (c) 9.42arrow_forward9. What is the pH of a solution whose hydronium ion concentration is 2.5 X 10-8 M? (a) 7.6 (b) 8.0 (c) 2.5 (d) 6.4 (e) 6.0 10. An aqueous solution has a pOH of 9.35, this solution is: (a) Neutral (b) Basic (c) Acidic (d) Impossible - this pOH cannot be reached in an aqueous solution (e) More information is needed. 11. Which is the strongest acid in the provided table below? Acid Acetamide 2-Pyridinamine Alloxanic Acid (a) Acetamide (b) 2-Pyridinamine (c) Alloxanic Acid (d) 4-chlorophenol (e) Quinoxaline pka 0.63 6.82 6.64 4-chlorophenol 9.18 Quinoxaline 0.56 avods rollorarrow_forwardWhat is the pH of a 0.25 M solution of H3PO4? Ka = 7.2 x 10-³ (A) 0.25 (B) 7.2 x 10-3 (C) 0.0018 (D) 0.042 (E) 1.37arrow_forward
- What are the concentrations of H3O+ and OH − in each of the following? (Assume the value of Kw is 1.0 10-14.) (a) 1.84 M NaOHH3O+ _____ MOH − ______M(b) 0.23 M Sr(OH)2H3O+ _____MOH −_____ M(c) 0.035 M HClO4H3O+ _____MOH − _____M(d) 0.42 M HClH3O+ _____MOH − _____Marrow_forwardWhat is the approximate pH of a solution prepared by mixing equal volumes of 0.05 M methylamine and 0.20 M hydrochloric acid? (a) 2.57 (b) 1.12 (c) 1.63 (d) 10.5 (e) 9.8arrow_forwardDetermine the molarity of a NaOH solution when each of the following amounts of acid neutralizes 25.0 mL of the NaOH solution. (a) 25.0 mL of 0.250 M HNO3 M (b) 20.0 mL of 0.500 M H2SO4 M (c) 23.9 mL of 1.00 M HC1 M (d) 20.0 mL of 0.100 M H3PО4arrow_forward
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