1 C6h5coo Aq Hcn Aq C6h5cooh Aq Cn Aq 2 No2 Aq Hcn Aq 1

NO2-

C6H5COO-

HCN

CN-

HNO2

C6H5COOH

strongest acid

intermediate acid

weakest acid

not a Bronsted-Lowry acid