20 {\mL} of 0.1 {\M} acetic acid is mixed with 50 {\mL} of potassium acetate. K_a of acetic acid =1.8 \times 10^{-5} at 27^{\circ} {\C}. Calculate concentration of potassium acetate if {\pH} of the mixture is 4.8 .

EAMCET Engineering 2009 Solved Paper

Section: Chemistry

Question : 78 of 160

Marks: +1, -0

20‌mL of 0.1M acetic acid is mixed with 50‌mL of potassium acetate. Ka of acetic acid =1.8×10−5 at 27∘C. Calculate concentration of potassium acetate if pH of the mixture is 4.8 .

0.1M
0.04M
0.4M
0.02M

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