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/mol

Acids and bases have been defined in different ways. Arrhenius defined an acid as a compound that dissolves in water to increase the concentration of H*, and a base as a compound that increases the concentration of OH-. Later, Brønsted and Lowry modified the definition: Acids are proton donors, and bases are proton acceptors. The Brønsted-Lowry definition of acids and bases is represented generically by this reaction, where HA is an acid and B is a base: НА + В — А+ BH- An acid that has lost a proton is that acid's conjugate base (A¯). A base that has accepted a proton is that base's conjugate acid (BH†). For each acid-base reaction, there are two conjugate acid-base pairs. The word conjugate is related to the word conjugal, which means "having to do with marriage." A wife is only a wife to her husband, and a husband is only a husband to his wife. Similarly, a conjugate acid is defined as "conjugate" only in relation to the base from which it is derived, and a conjugate base is so…

13.Which of the following is the weakest acid? Group of answer choices H2SO4 HClO4 H3PO4 H4SiO4   14. Calculate Kb for [A-] if the ionization constant of HA is 3.0 x 10-8. Group of answer choices 3.0 x 10-4 3.3 x 10-6 3.3 x 10-7 3.0 x 10-5

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