calculate the experimental Ka of: 1 M CH3COOH (exp. concentration of H+ is 0.003388 and exp....
Calculate the pH of 2.00 L of the buffer 2.50 M CH3COOH/1.50 M CH3COONa after the addition of 0.25 mol NaOH. For CH3COOH/CH3COONa, Ka = 1.8 ´ 10-5 and pKa = 4.74. Assume no volume changes after addition of 0.25 mol NaOH. You can assume that [H+] at equilibrium is very small. Select one: a. 6.21 b. 6.09 c. 5.96 d. 5.12 e. 4.58
A buffer at pH of 4.35 contains CH3COOH at a concentration of 0.60 M and CH3COONa at a concentration of 0.30 M. What will be the pH when 75.8 mL of 0.980 M NaOH is added to 450.4 mL of the buffer? The pKa of CH3COOH is 4.76 dlace of
1. Calculate pH of CH3COOH. The concentration of this species is O.33 M. Ka = 1.8x10^-5 (six decimal places) 2. Calculate pH of NH4OH. The concentration kf this species is 0.49 M. Ka= 1.8x10^-5 (six decimal places) 3. How do I figure out is an aqueous solution of a salt is acidic, basic, or neutral? Can you explain it by using this as an example; Sodium acetate, NaCH3COO?
1. A buffer solution is 0.430 M in CH3COOH and 0.268 M in CH3COONa. If Ka for CH3COOH is 1.8×10-5, what is the pH of this buffer solution? ___ 2. A buffer solution is 0.313 M in KHSO3 and 0.367 M in K2SO3. If Ka for HSO3- is 6.4 x 10-8, what is the pH of this buffer solution? pH =
Calculate the pH of the following to buffer solutions a. 1.2 M CH3COONa/1.0 M CH3COOH. b. 0.1 M CH3COONa/0.1 M CH3COOH. Which is the more effective buffer?
calculate the number of grams of CH3COONa * 3H2O (sodium acetate tri-hydrate) needed to make 250.0 mL of a CH3COOH (acetic acid)/ CH3COONa * 3H2O buffer. The target pH of the buffer is 5.25. The given concentration of [CH3COOH] is equal to 0.10 M. Ka = 1.80 x 10-5 for acetic acid. PLEASE EXPLAIN :( Q1:Given the Ka value in the instructions (1.80 x 10-5). Calculate the pKa Q2:Use the Henderson-Hasselbalch equation to determine the ratio of [CH3COO-]/[CH3COOH] needed to...
Calculate the pH of a buffer solution containing 0.100 M CH3COOH and 0.100 M CH3COONa ; Ka of CH3COOH = 1.8 x 10-5
2-Calculate the pH of a buffer containing 0.12 M CH3COOH and 0.2 M CH3COONa salt knowing that the CH3COOH has pKa = 4.77?
QUESTION 8 Calculate the pH of a solution that is 0.384 M CH3COOH and 0.374 M CH3COONa. Ka of CH3COOH is 1.8 x 10". Enter your answer with two decimal places.
Calculate the approximate pH of an aqueous solution of a mixture of CH3COOH, 0.27 M, and CH3COONa, 0.15 M, at 25°C. (Note: consider one decimal place for the pH answer.) pKa = 4.76.