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Calculate the pOH and pH of a 0.1 M CH3COO^– solution (Ka = 1.8 × 10^–5).

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Calculate the pOH and pH of a 0.1 M CH3COO– solution (Ka = 1.8 × 10–5). 

CH3COO– + H2O ⇌ CH3COOH + OH– 

(A) 6.12, 7.88 

(B) 4.12, 9.88 

(C) 5.13, 8.87 

(D) none of the above

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Correct option: (C) 5.13, 8.87

Explanation: 

pH = 8.87 

pOH = 14 – 8.87 = 5.13

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