1. what is the pH of a solution containing 150 mL of 0.25 M sodium acetate and 500mL of 0.30 M acetic acid? Pka of acetic acid is 4.76
2. is the solution above buffered?
Answer:-
1. what is the pH of a solution containing 150 mL of 0.25 M sodium acetate...
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.
You need to prepare 900 mL of a 0.25 M acetate buffer solution with a pH of 4.3 a. Determine the concentration of both the acetate (conjugate base) and acetic acid (weak acid) in this solution. b. If you made the solution above using solid sodium acetate and liquid acetic acid, what mass of sodium acetate is required and what volume of glacial acetic acid is required?
Question 4. a.) Calculate the pH of a solution initially 0.1 M in acetic acid and 0.02 M in sodium acetate. The pKa for acetic acid is 4.76. b) Calculate the pH of the buffer if you add 10 ml of 0.1M HCl to 100 ml of the buffer in part a.
12. The pH of a solution that is 0.25 molar in acetic acid and 0.1 molar in sodium acetate is 4.36. What is the pka of acetic acid? 3.96 B) 4.76 C) 5.96 D) 7.76 E) none of the above
6. How many mL of 0.2 M sodium acetate should be added to 200 mL of 0.2 M acetic acid to make a buffer of pH 5.5? (refer to Table 2-2 on page 60 for pKa values). What is the molarity of the resulting buffer with respect to acetate (acetate + acetic acid)? 7. How many mL of 0.2 M HCl should be added to 50 mL of 0.2 M Tris base (Trishydroxymethyl aminomethane) to make a buffer of pH...
1) How would you make 300 ml of a 0.1 M sodium phosphate buffer, pH 7.0 (pKa = 7.2) phosphate dibasic (the conjugate base). 2) What are the concentrations of acetate and acetic acid in a 0.2 M acetate buffer pH 5.3? The pKa for acetic acid is 4.76. 3)You have 100 ml of 0.1 M acetate buffer pH 5.2 (pKa 4.76). You add 10 ml of 0.1 M NaOH. Calculate the resulting change in pH and the buffering capacity...
2- What is the pH for a 0.0140 M solution of sodium acetate (NaAc). The pKa value for acetic acid is 4.75. ANS: ...
You have just made a solution by combining 750 mL of a 0.3 M sodium acetate solution with 250 mL of 1 M acetic acid (pKa = 4.7). what is the pH of the resulting solution? 65.
A buffer solution that is 0.10 M sodium acetate and 0.20 M acetic acid is prepared. Calculate the initial pH of this solution The K, for CH3COOH is 1.8 x 10-5 M. As usual, report pH to 2 decimal places. Answer: A buffered solution resists a change in pH. Calculate the pH when 21.2 mL of 0.031 M HCl is added to 100.0 mL of the above buffer. Answer:
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