What is the ph of a buffer that is 0.090 m in formic acid (hcho2) and 0.150 m in potassium formate (kcho2)? for formic acid, ka=1.8×10−4. what is the of a buffer that is 0.090 in formic acid and 0.150 in potassium formate ? for formic acid, . 3.52 3.57 3.97 3.91

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