PRACTICE PROBLEMS – TheWorksheets.CoM – Page 2

PRACTICE PROBLEMS FOR BRONSTED-LOWRY ACID-BASE CHEMISTRY

5. The numbers represent approximate pKa values for the substances acting as acids. CN + NH3 HCN + NH2 OH+ H3CCH2 O O + H3CCH3 O H 2O + NH3 H3O + NH H2CO 3 + H2O HCO3 + HO CH3CH 2CH2CH3 + CH2 CH3CHCH2CH + CH 3 38 9 17 20 4-1.7 6.4-1.7 48 40 6. A 7. Methanesulfonic acid is the stronger acid. The lower the pKa, the stronger the acid.