Answer:
The pH is 4.76 (option C)
Explanation:
pH of a solution = TO BE DETERMNED
[sodium acetate] = 1M ; [acetic acid] = 1M
K = [H+] [A-] / [HA]
K = [H+] [1] / [1]
K = H
pH = pK
⇒ now pH is equal to pK
⇒ The value of pK is given which is 4.76
⇒ This means the value of the pH is also 4.76
(3) CH3COOH is the correct answer.
CH3COOH is a weak electrolyte. When being put in water, it separates into CH3COO- and H+, then the ions combine to form again CH3COOH. The process takes place back and forth.
Hope this would help~
Number of moles:
n = M x V
n = 0.002915 x 1.25
n = 0.00364375 moles
