What would the pH of a solution containing 1.11g of an acid HX (Molar Mass of...
What would the pH of a solution containing 3.55g of an acid HX (Molar Mass of HX = 29.00 g/mol) after the addition of 2.90g of Nax? Assume no volume change to the solution after the addition of the Nax. (HX K - 2.14E-5) Submit Answer Tries 0/98
-/0.1 points 33 0/4 Submissions Used (a) Calculate the percent ionization of 0.00720 M carbonic acid (Ka = 4.3e-07). % ionization = % (b) Calculate the percent ionization of 0.00720 M carbonic acid in a solution containing 0.0470 M sodium hydrogen carbonate. % % ionization = Submit Answer + -/0.1 points 34. 0/4 Submissions Used A buffer solution contains 0.76 mol of propionic acid (HC3H502) and 0.30 mol of sodium propionate (NaC3H502) in 7.30 L The Ka of propionic acid...
21. What is the molar solubility of Mn(OH)2(s) in a solution that is buffered at pH 8.00 at 25 °C? The Ksp of Mn(OH)2 is 1.9 x 10- at 25 °C. The concentration of Pb in an aqueous solution is 5.5 x 103 M. What concentration of SO required to begin precipitating PbSO? The Ksp of PbSOa is 2.5 x 10 is 22. must be added to 1,0 L of 0.0180 M Pb2 (aq) to 23. What mass of KCl...
What is the pH of a 1.00 L solution containing 0.295 M lactic acid, HC3H5O3 (pKa = 3.86) and 0.295 M sodium lactate, NaC3H5O3, upon the addition of 0.055 mol HCl? Assume no significant volume change occurs.
A 0.2 M solution of an acid HX has a pH of 2. What is the value for Ka for HX?
Determine Ka of the weak acid HX knowing that 0.10M solution of LiX has pH of 8.90 Post-Laboratory Questions and Exercises DUE AFTER COMPLETING LAB. ANSWER IN SPACE PROVIDED. 1. Determine the K, of the weak acid HX knowing that a 0.10 M solution of LiX has pH of 8.90.
26. + -/0.1 points 0/4 Submissions Used A buffer solution contains 0.45 mol of benzoic acid (HC7H502) and 0.33 mol of sodium benzoate (NaCzH502) in 3.70 L. The Ka of benzoic acid (HC7H502) is Ka = 6.30-05. (a) What is the pH of this buffer? pH = (b) What is the pH of the buffer after the addition of 0.31 mol of NaOH? (assume no volume change) pH = (c) What is the pH of the original buffer after the...
HELP! Part B: Determination of acid ionization constant (K.) and molar mass of an u Concentration of NaOH (mol/L) from bottle: 0.1053 Mass concentration of unknown acid (g/L) from bottle: 3.120 pH of unknown acid solution: 228 from pH meter. 1) Titration of unknown acid using indicator only Trial 2 Trial 1 1.593 30.851 090909 ml Mass of empty beaker Mass of beaker + unknown acid solution Mass of unknown acid solution Volume of unknown acid solution Initial volume of...
(a) Calculate the percent ionization of 0.00660 M acetic acid (Ka = 1.8e-05). % ionization = % (b) Calculate the percent ionization of 0.00660 M acetic acid in a solution containing 0.0220 M sodium acetate. % ionization = % + -10.1 points 0/4 Submissions Used A buffer solution contains 0.70 mol of hydrogen peroxide (HOOH) and 0.87 mol of sodium hydrogen peroxide (NaOH) in 5.80 L. The Ka of hydrogen peroxide (HOOH) is ka = 2.4e-12. (a) What is the...
26. -10.1 points 0/4 Submissions Used A buffer solution contains 0.10 mol of hydrazoic acid (HN3) and 0.43 mol of sodium hydrazoate (NaN3) in 1.70 L. The Ka of hydrazoic acid (HN3) is ka = 1.92-05. (a) What is the pH of this buffer? pH = (b) What is the pH of the buffer after the addition of 0.05 mol of NaOH? (assume no volume change) pH = (c) What is the pH of the original buffer after the addition...