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
Calculate the molar ratio of citric acid and sodium citrate required to prepare 40mM buffer pH...
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...
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.
5 points) I want to prepare a buffer at pH 3.50 using citric acid and monosodium citrate. The pk, of citric acid is 3.13. What is the concentration ratio of citrate to citric acid required to make the buffer!
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).
Which statement describes the action of a buffer composed of citric acid (H3C6H5O7) and sodium citrate (NaH2C6H5O7)? a)Both components, citric acid and sodium citrate, neutralize added base. b)Both components, citric acid and sodium citrate, neutralize added acid. c)Citric acid neutralizes added base, and sodium citrate neutralizes added acid. d)Sodium citrate neutralizes added base, and citric acid neutralizes added acid.
Prepare 100mL of a 0.2M acetate buffer solution of pH =4.76 (using 17.6N acetic acid and sodium acetate). a. Calculate the volume of acetic acid and weight of sodium acetate necessary to prepare the buffer solution. pKa of acetic acid is 4.76
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?
What molar ratio of sodium cyanide to hydrocyanic acid is necessary to prepare a buffer with pH = 9.72? Ka of HCN = 4.9 x 10-10
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.
calculate the pH for a buffer solution made from a 3:1 ratio of 0.1 M acetic acid and 0.1 M sodium acetate. (pKa of acetic acid is 4.76)