WEBApr 28, 2021 · Calculate Kb and pKb of the butyrate ion ( CH3CH2CH2CO − 2 ). The pKa of butyric acid at 25°C is 4.83. Butyric acid is responsible for the foul smell of rancid butter. Calculate Ka and pKa of the dimethylammonium ion ( (CH3)2NH + 2 ). The base ionization constant Kb of dimethylamine ( (CH3)2NH) is 5.4 × 10 − 4 at 25°C.
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