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What would the initial pH of a acetate/acetic acid buffer system (pKa = 4.75) if the concentration of acetate is 1.36 × 10-2 molar and the concentration of acetic acid is 1.64 × 10-1? A. 5.83 B. 3.67 C.
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What would the initial pH of a acetate/acetic acid buffer system (pKa = 4.75) if the concentration of acetate is 1.36 × 10-2 molar and the concentration of acetic acid is 1.64 × 10-1?

A.
5.83
B.
3.67
C.
2.08
D.
1.66

User FeifanZ
by
4.7k points

1 Answer

2 votes

Answer:

B) pH = 3.67

Step-by-step explanation:


pH = pK_(a) +log([A^(-)])/([HA]) \\


pH = 4.75+log([1.36*10^(-)2])/([1.64*10^(-1)]) = 3.67

User Alan Shortis
by
4.6k points
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