n-caproic acid, C5H11COOH, found in coconut and palm oil is used in making artificial flavours, has solubility in water equal to 11.6 g/L. The saturated solution has pH = 3.0. The Ka of acid is

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Prashant Kotian · Accepted Answer

Correct answer: B. M = 116 g/mol. C = 11.6/116 = 0.1 M. [H+] = 10^-3 M. Ka = [H+]^2/C = 10^-6/0.1 = 10^-5.

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