CHEMC 101 - Worksheet 4-2-Bronsted Acids and Equilibria Page 2

Chemistry 12 [KEY] Worksheet 4-2-Bronsted Acids and Equilibria

9. Find the conjugate acids of each of the following (5 marks) a) HPO, H2PO b) PO HPO 2- 5 c) HSO H2SO4 d) NH, NH4+ e) H^2PO H3PO4 10. Find the conjugate bases of each of the following (5 marks) 2- a) H^2PO HPO42 b) HIPO H2PO4 c) HSO SO4 d) H^2O OH e) HPO PO43- Give the formulas of a conjugate acid/base pair in which the dihydrogen citrate ion is the conjugate base.(2 marks) 2 16 Conjugate acid H3 C6H5O Conjugate base H2C6H5 On Give the formulas of a conjugate acid/base pair in which the dihydrogen citrate ion is the conjugate acid.(2 marks) Conjugate acid H2C6H5O7 Conjugate base HC6 H 5 O^2 2- Is the dihydrogen citrate ion amphiprotic?(Imark) yes To 16 Explain your answer. (I mark) Can act as an acid (donating protons) or as a base (accepting protons) 5