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Formic acid (HCO2H) has a Ka value of 1.70 X 10-4 at 25°C. Calculate the pH...

Formic acid (HCO2H) has a Ka value of 1.70 X 10-4 at 25°C. Calculate the pH at 25°C of . . . . a. a solution formed by adding 15.0 g of formic acid and 30.0 g of sodium formate (NaCO2H) to enough water to form 0.500 L of solution. b. a solution formed by mixing 30.0 mL of 0.250 M HCO2H and 25.0 mL of 0.200 M NaCO2H and diluting the total volume to 250 mL. c. a solution prepared by adding 30.0 mL of 1.95 M NaOH solution to 0.500 L of 0.100 M HCO2H. 1.pH after adding 15.0 g of formic acid and 30.0 g of sodium formate (NaCO2H) to enough water to form 0.500 L of solution 2.pH after mixing 30.0 mL of 0.250 M HCO2H and 25.0 mL of 0.200 M NaCO2H and diluting the total volume to 250 mL. 3.pH of a solution prepared by adding 30.0 mL of 1.95 M NaOH solution to 0.500 L of 0.100 M HCO2H.

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