At pH 3.0, what percentage (in %) of lactic acid is in its deprotonated form? Hint: The pKa of lactic acid is 3.86.

Ascorbic acid, H2C6H6O6, is a diprotic acid usually known as vitamin C. For this acid, pKa1 is 4.10 and pKa2 is 11.79. When 125 mL of a solution of ascorbic acid was evaporated to dryness, the residue of pure ascorbic acid had a mass of 3.64 g. Your answer is correct. Calculate the molar concentration of ascorbic acid in the solution before it was evaporated. 0.164 Hint Your answer is partially correct. What was the pH of the ascorbic acid solution before it was evaporated? pH = 2.44 What was the concentration of the ascorbate ion, C6H6062, before the solution was evaporated? i M M

Choose the stronger acid in each of the following pairs:(a) H₂Se or H₃As (b) B(OH)₃ or Al(OH)₃(c) HBrO₂ or HBrO

Part A: Please calculate pKa of formic acid below:  (HCOOH  H+ + HCOO-) Part B: What is pH of a solution containing 10 mM formic acid? G°f HCOOH = -372 kJ/molG°f HCOO- = -351 kJ/molG°f H+ = 0 kJ/mol1