3. For a generic acid (HA) pK, = 6.3. In what form would the acid exist as primarily at pH 8? In what form would the acid exist as primarily at pH 5? HA (aq) H* (aq) + A (aq)

23. As we learned previously, Benadryl, C₁7H21ON, is a weak base. a. The pk, of Benadryl is 5.00 at 25 °C. Calculate the Kb. b. Benadryl is available to buy in capsules, tablets, or liquid forms. Benadryl liquid elixir contains 12.5 mg of Benadryl per 5.00 mL of aqueous solution. What is the concentration of the hydroxide ion, the % hydrolysis of Benadryl, and the pH of the aqueous solution? The molar mass of Benadryl is 255.4 g/mol.

Solutions to question 4 please

Identify the conjugate base from the reaction occurring in this titration. HC 2 H 3 O 2(aq) +NaC 2 H (aq) rightleftharpoons NaC 2 H 3 O 2(aq) +H 2 O (l) HC 2 H 3 O 2 (aq) NaOH (aq) NaC 2 H 3 O 2(aq) H 2 O (l)

What is the value of pKa if H30+ and CN- equal 6.30E-6

The pH of an aqueous solution of 0.468 M aniline (a weak base with the formula C6H5NH2) is ______ .

For the following reactions, write Ka or Kb expressions (as appropriate) and predict in which direction the equilibrium will lie if the initial concentration of aqueous reactant is 0.10 M.a) HCl(aq) + H2O(l) ⇌ H3O+(aq) + Cl–(aq)b) HClO(aq) + H2O(l) ⇌ H3O+(aq) + OCl–(aq)c) (CH3)3N(aq) + H2O(l) ⇌ (CH3)3NH+(aq) + OH–(aq)d) Ca(OH)2(aq) ⇌ Ca+(aq) + 2HO–(aq)

Solution to 1 and 2 please

a. A hydrochloric acid solution has a pH value of 3. Which of the following substances would increase the pH value of the solution when mixed with it? (1) Dilute ammonia solut(2) Dilute (3) WaterA(1) and (2) onlyB(1) and (3) onlyC(2) and (3) only D 1,2,3   b. Which of the following statements about a concentrated acid is correct?A. It can react with copper metal.B. It cannot react with copper(II) oxide.C. It is an acid that fully ionizes in water.D. It must contain hydrogen ions when in aqueous form. c. which of the following states of hydrogen chloride will not turn dry blue litmus paper red? (1) HCl gas(2) HCl in water(3) HCl in methylbenzene (an organic solvent)A. (1) onlyB. (2) onlyC. (1) and (2) onlyD. (1) and (3) only

Another buffer found in blood is based on the equilibrium between dihydrogen phosphate and monohydrogen phosphate. The reaction is shown below:   H2PO4-(aq) + H2O(l) → H3O+(aq) + HPO42-(aq)   If the pH of a blood sample was 7.05, what would you calculate as the ratio of [H2PO4-] to [HPO42-]? (Ka1 = 7.5 × 10-3, Ka2 = 6.2 × 10-8, Ka3 = 3.6 × 10-13)