## Chemistry and Chemical Reactivity (9th Edition)

a) < 7, strong Ka for HSO4- b) < 7, ammonium donates hydrogen to water c) = 7, perchlorate is a very weak base d) > 7, carbonate is a moderately strong base e) > 7, sulfide is a very strong base f) = 7, nitrate is a very weak base g) > 7, hydrogen phosphate is stronger as a base than as an acid h) = 7, bromide is a very weak base i) < 7, $FeCl_3+6\ H_2O\leftrightarrow Fe(OH)_3+3\ H_3O^++3\ Cl^-$ Highest pH: E, sulfide is the strongest base Lowest pH: A, hydrogen sulfate is the strongest acid