If 0.20 mol/L CH3COOH and 0.50 mol/L CH3COO together make a buffer so – McqOptions

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1.	If 0.20 mol/L CH₃COOH and 0.50 mol/L CH₃COO together make a buffer solution, calculate the pH of the solution if the acid dissociation constant of CH₃COOH is 1.8 10^-5.
A.	2.09
B.	5.14
C.	2.65
D.	3.98
Answer» C. 2.65

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