Calculate the pH of a solution produced by mixing 4.3 cm3 of 0.100 mol dm-3potassium hydroxide, KOH solution to 50.0 cm3 of 0.136 mol dm-3 propanoic acid, C2H5COOH, solution. The pKa of propanoic acid is 4.87.
a. 4.89
b. 2.44
c. 1.93
d. 3.67
Calculate the pH of a solution produced by mixing 4.3 cm3 of 0.100 mol dm-3potassium hydroxide,...
What is the pH of a solution prepared by mixing 25.0 mL of 0.100 M benzoic acid and 50.0 mL of 0.050 M KOH ? (Ka benzoic acid = 6.4 x 10-5) A. 8.36 B. 5.19 C. 8.81 D. 9.04 E. 5.64
What is the pH of a 125mM solution of sodium lactate?
Calculate the pH of a 0.579 M aqueous solution of Lactic Acid (pKa = 3.76) Which of the following acids, if in solutions of equal concentration, is the least acidic? a) 0.1M propanoic acid pKa = 4.8 b) 0.1M octanoic acid pKa = 4.89 c) 0.1 M uric acid, pKa = 3.89 d) 0.1 M formic acid pKa = 3.75 e) All of these acids are equally acidic because...
1) Calculate the pH of a solution produced by mixing 100.0 mL of 0.10 M HCl(aq) and 100.0 mL of 0.20 M NaOH(aq). 2) Calculate the pH of an aqueous solution made by mixing 100.0 mL of 0.40 M NH4Cl and 50.0 mL of 0.40 M NaOH. The pKa of NH4+ is 9.24.
Calculate the pH of a solution produced by mixing 0.50 mol of HCN and 0.20 mol of NaOH in a total of 1.00 L of solution. Ka = 4.9 × 10-10 for HCN
Calculate the volume of 0.531 mol/L propanoic acid (C2H5COOH, pKa = 4.88) that must be added to 60.0 mL of 0.450 mol/L calcium propanoate (Ca(C2H5COO)2) to prepare a buffer solution with a pH of 5.00.
Nicole measured the pH of a 0.100 M solution of propanoic acid, CH3CH2COOH, a weak organic acid at equilibrium and found it to be 2.931 at 25C. Calculate the Ka of propanoic acid. Her lab instructor mentions that the half equivalence method is better for determining pKa. What is the half-equivalence point and why is this method better at determining pKa? What is the pH after 20.0 mL of 0.0750 M NaOH is added to 30.0 mL of the 0.100...
If a buffer solution has a pH of 5.09 and a propanoic acid (C3H7COOH), calculate the propanoate ion (C3H7C00") concentration in the buffer. The pka for propanoic acid is 4.89. 0.333 M 0.250 M 1.58 M 0.210 M 0.133 M 0.0527 M
10. Calculate the pH of a solution made by mixing 10.0 mL of 0.100 HCI and 15.0 ml of 0.100 M 11. Indicate each of the following aqueous solutions is acidic, basic, or neutral: KOH HI
Calculate the volume of 0.531 mol/L propanoic acid (C2H5COOH, pKa =
4.88) that must be added to 60.0 mL of 0.450 mol/L calcium
propanoate (Ca(C2H5COO)2) to prepare a buffer solution with a pH of
5.00.
Calculate the volume of 0.531 mol/L propanoic acid (CH-COOH, PK, -4.88) that must be added to 60.0 mL of 0.450 mol/L calcium propanoate (Ca(CH.COO).) to prepare a buffer solution with a pH of 5.00. 77 mL 98 mL 136 ml 68 ml 220 mL 11...
Calculate the pH of (a) a solution that is 0.060M in potassium propionate (C2H5COOK or KC3H5O2) and 0.085M in proprionic acid (C2H5COOH or HC3H5O2); (b) a solution that is 0.075M in trimethylamine, (CH3)3N, and 0.10M in trimethylammonium chloride, (CH3)3NHCl; (c) a solution that is made by mixing 50.0 mL of 0.15M acetic acid and 50.0 mL of 0.20M sodium acetate.