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A 0.200 M solution of a weak base has a pH of 9.95 . What is the base hydrolysis constant, Kb, for the weak base?
++ ++ ++ ++ ++ If the Kh of a weak base is 7.7 x 10-6, what is the pH of a 0.48 M solution of this base? pH = Enough of a monoprotic weak acid is dissolved in water to produce a 0.0136 M solution. The pH of the resulting solution is 2.42. Calculate the K, for the acid. Kg =
pH and buffer solutions If a buffer solution is 0.570 M in a weak acid (K = 5.8 x 10"") and 0.200 M in its conjugate base. what is the H2 pH =
Enough of a monoprotic acid is dissolved in water to produce a 1.06 M solution. The pH of the resulting solution is 2.56. Calculate the K, for the acid. Number If the K of a monoprotic weak acid is 7.1 x 10 what is the pH of a 0.40 M solution of this acid? Number PH- The K of a monoprotic weak acid is 2.57 x103. What is the percent ionization of a 0.178 M solution of this aci Number
Q: What is the pH of a solution containing 0.125 M KH2PO4 and 0.175 K2HPO4 Ka (H2PO4-) = 6.2 x 10-8 Ka (HPO42-) = 4.8 x 10-13 Q: A 0.15 M solution of a weak acid is 3.0 % dissociated. What is the Ka of this acid? Q: A solution of aspirin was prepared that is 0.16 M. The pH of this solution was measured to be 2.43. What is the Ka of aspirin? Q: A solution of formic acid...
Ephedrine is a weak base. A 0.035 M solution of ephedrine has a pH of 11.33. What is the base ionization constant (Kb) for ephedrine? () 7.8 x 10-10 () 1.5 x 10-9 () 9.8 x 10-5 () 1.4 x 10-4
Salt of a Weak Base and a Strong Acid. pH of Solution. Calculate the pH of a 1.19 M aqueous solution of triethylamine hydrochloride ((C2H5)3NHCI) (For triethylamine, (C2H5)3N, Kb = 4.00x 10-4.) Give two decimal places in your answer.
6. A0.68 M solution of a weak acid HA is 0.35 % ionized. What are the H, A, and HA concentrations at equilibrium? What is K? 7. The K, for glyoxylic acid, HC HO, is 6.6 x 104. What is the pH of a 0.45 M solution of the acid? What is the % ionization of the acid at this concentration?
1. The weak base hydrazine, N2H4, has a Kb = 1.7 x 10-6. What is the percent ionization of a 0.15 M solution? 2. Hydrofluoric Acid has a Ka of 6.8 x 10-4. Calculate the [H+] in 0.25 M HF: 3. What is the pH of a 0.050 M solution of Acetic Acid, HC2H3O2? 4. A solution has a pOH of 10.25. Calculate the [H+].
1 . If a buffer solution is 0.260 M in a weak acid (?a=8.3×10−5)and 0.480 M in its conjugate base, what is the pH? pH= 2. If a buffer solution is 0.200 M in a weak base (?b=5.0×10−5) and 0.530 M in its conjugate acid, what is the ph 3. Phosphoric acid is a triprotic acid (?a1=6.9×10−3, ?a2=6.2×10−8 , and ?a3=4.8×10−13 To find the pH of a buffer composed of H2PO4 - (aq) ) and HPO4 2− (aq) , which...