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Practice Problem BUILD
Calculate the pH of the following aqueous solutions at
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Chemistry
- Determine the pH of the solution resulting from mixing a solution of 153 mL of CH₂BrCOOH (Ka = 1.26e - 03) at a 1.540 M concentration, with 136 mL of a 1.380 M solution of KOH? O (a) 0.317 (b) 3.492 (c) 2.492 (d) 1.746 O (e) 2.900arrow_forwardtion will be acidic. Simila Practice Exercise Predict whether the following solutions will be acidic, basic, or nearly neutral: (a) LiClO,, (b) Na,PO4, (c) Bi(NO3)3, (d) NH,CN. Finally we note that some anions can act either as an acid or as a base. For example, the bicarbonate ion (HCO;) can ionize or undergo hydrolvsis nn follarrow_forward7. 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_forward
- For which of the following solutions must we consider the ionization of water when calculating the pH or pOH?(a) 3 × 10−8 M HNO3(b) 0.10 g HCl in 1.0 L of solution(c) 0.00080 g NaOH in 0.50 L of solution(d) 1 × 10−7 M Ca(OH)2(e) 0.0245 M KNO3arrow_forwardWhat is the pH of a 0.40 M solution of benzoic acid,C6H5COOH? (The Ka value for benzoic acid is given inTable )(a) 2.30 (b) 2.10 (c) 1.90 (d) 4.20 (e) 4.60arrow_forwardIf the household water source has a tenfold decrease in H+ concentration from its initial value of pH 6.5, what is the new pH of the water source? (A) 3.5 (B) 7.5 (C) 5.5 (D) 7.5 (E) 7.0arrow_forward
- What is the pH of a 0.65 M solution of pyridine, C5H5N? (a) 4.48 (b) 8.96 (c) 9.52 (d) 9.62 (e) 9.71arrow_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_forwardIf 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_forward
- Which of the following statements describes a strong acid? (Select all that apply) The Ka is very small. Dissociates completely into ions in water. Is a strong electrolyte. Have a strong conjugate base.arrow_forwardWhich of the following statements is true? (Select all that apply.) In an acid solution, K₂ = [H3O*]. Consider 1.0 M acidic solutions of the imaginary acids, HA, HB and HC and the 1.0 M salt solutions NaA, NaB, and NaC. If HA has the lowest pH, then 1.0 M NaA would have the highest pH. Ka of an acid multiplied by the Kb of its conjugate base equals Kw. The stronger the base, the weaker its conjugate acid. None of these are true.arrow_forwardCalculate the pH of solutions having the following [H+]: (a) 0.68 M (b) 1.42 M (c) 4.5 × 10-5 Marrow_forward
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