What is the pH of a buffer solution prepared with a 0.5 M sodium citrate and 1% citric acid (pKa for citric acid = 3.13, MW = 192 g/mole).
What is the pH of a buffer solution prepared with a 0.5 M sodium citrate and...
1. What is the pH of a buffer solution prepared with a 0.4 M sodium citrate and 1% citric acid (pka for citric acid - 3.13, MW - 192 g/mol)? 8. A buffer solution is prepared using 0.4 mole of a weakly basic drug (pka - 10.1) and an unknown quantity of its salt. The final solution has a pH of 8.99. How much of the salt was used? 9. A buffer solution with a desired pH of 8.15 needs...
A solution of sodium citrate (monobasic) is prepared to a formal concentration of 0.2 M. If the pKa's for the triprotic citric acid molecule are 3.13, 4.76, 6.40 what is the approximate pH of this solution?
Calculate the molar ratio of citric acid and sodium citrate required to prepare 40mM buffer pH 4.8 citric acid pka= 3.13, 4.76, 6.39
A buffer solution is prepared by mixing 23.6 mL of 0.398 M sodium dihydrogen citrate with 36.6 mL of 0.881 M sodium hydrogen citrate A table of pKa values can be found here 1. Calculate the pH (to two decimal places) of this solution Assume the 5% approximation is valid and that the volumes are additive. Submit Answer Tries 0/3 2. Calculate the pH (to two decimal places) of the buffer solution after the addition of 24.9 mL of a...
29. A student has 200 mL of a buffer solution that consists of 0.700 M of citric acid and 0.500 M sodium citrate. What is the pH of this solution? The pKal of citric acid is 3.06. 30. Give the formula and name of a metal hydroxide base.
Citric Acid has 3 pKas: 3.13, 4.76, and 6.39. How many grams of sodium citrate monobasic (HOC(COONa)(CH2COOH)2) and citric acid (HOC(COOH)(CH2COOH)2) are needed to make 300 mL of a 10 mM citrate buffer of exactly pH 2.8? The molecular weight of sodium citrate monobasic (NaH7C6O7) is 214.11 g/mol and that of citric acid (H8C6O7) is 192.12 g/mol.
What is the pH change of a 0.240 M solution of citric acid (pKa=4.77) if citrate is added to a concentration of 0.160 M with no change in volume?
What is the pH change of a 0.300 M solution of citric acid (pKa=4.77) if citrate is added to a concentration of 0.145 M with no change in volume?
What is the pH change of a 0.210 M solution of citric acid (pKa=4.77) if citrate is added to a concentration of 0.130 M with no change in volume?
Calculate the pH of a buffer solution prepared by mixing 75 mL of 1.0 M lactic acid and 25 mL of a 1.0M sodium lactate. (pka of lactic acid = 3.86) Calculate the change in pH that occurs when 0.01moles of OH are added to a 1L buffered solution that contains 0.5M acetic acid (HC_2H_3O_2) and 0.5M acetate ion (C_2H_3O_2). Acetic acid pka = 4.76.