Which acid is stronger, acetic acid (pKa = 4.75) or citric(II) acid (pKa = 4.74)? Why?
Which acid is stronger, acetic acid (pKa = 4.75) or citric(II) acid (pKa = 4.74)? Why?
Acetic acid has a pKa of 4.74. A stock solution of 1.0 M acetic acid is available. A stock solution of 2.0 M potassium acetate is available. Show all the calculations and explain how to make 560.0 mL of 250. mM acetate buffer that has a pH = 5.0. (Hint: first make a 250 mM potassium acetate solution and a 250 mM acetic acid solution. Then determine how much of each to use.). pH = pKa + log {[acetate]/[acetic acid]}
For acetic acid pKa =4.74. A buffer solution was made using 0.30 mole of acetic acid and an unspecified and amount of sodium acetatein water to make 2.00 liters of solution. The solution pH was 4.91. Calculate the number of moles of sodium acetate used.
Find the percent ionization of a 0.200M acetic acid solution if it’s pKa=4.74
When 1.00 L of 0.45 M acetic acid (pKa = 4.74) is mixed with the exact volume of 0.55 M NaOH required to convert the acid to its conjugate base, at the endpoint the solution will have a: A. pH < pKa B. pH > 7.00 C. pH = pKa D. pH = 7.00 E. pH < 7.00
a) pKa = 4.74
b) pKa = 6.37
c) pKa = 4.74
d) pKa = 1.99
Determine the pH of a buffer created by adding these solutions toge a 50 mL 0.50M acetic acid and 50 mL 0.50M sodium acetate b. 20 mL 0.10M carbonic acid and 10 mL 0.10M sodium bicarbonate C. 20 mL 0.50M sodium acetate and 10 mL 0.50 hydrochloric acid d. 20 mL 0.20M NaHSO4 and 10 mL 0.20M NaOH
You are making a pH 5.0 buffer with acetic acid (pKa = 4.75) and sodium acetate. You want the total concentration of acetate ([acetic acid] + [sodium acetate] ), to be 0.50 M. What concentrations of acetic acid and sodium acetate do you use to make your buffer? acetic acid sodium acetate
A buffer formed from 20.0 mL of 0.120 M Acetic acid (CH3COOH) (pKa = 4.74) and 12.0 mL of 0.200 M sodium acetate (CH3COONa). What is the pH of this buffer after addition of 0.0001 mol of HCl?
Question 3A: Acid Strength Which is the strongest acid? OAcetic acid, pKa 4.74 OHydrobromous acid,pKa 8.62 O lodic acid, pKa 0.80 OPeroxomonosulfuric acid, pKa = 1.00
A 1.00 L buffer solution with pH = 4.74 is composed of 0.30 mol acetic acid and 0.30 mol sodium acetate. A) Determine the pKa of acetic acid B) If 0.030 mol of NaOH is added, determine the pH of the solution
Chloroacetic acid, HC2H2O2Cl, is a stronger monoprotic acid than acetic acid. In a 0.10 M solution, the pH is 1.96. Calculate the pKa for chloroacetic acid. pKa =