Problem: The pH of a 0.60 M aqueous solution of formic acid, HCHO 2, at 25.0 °C is 1.98. What is the approximate value of Ka for formic acid? 

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The pH of a 0.60 M aqueous solution of formic acid, HCHO 2, at 25.0 °C is 1.98. What is the approximate value of Ka for formic acid? 

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