Conjugate acid of a weak base is always stronger. What will be the decrinsing order of basic strength of the following conjugate bases?
`OH^(-)`,`RO^(-)`,`CH_(3)`,`COO^(-)`,`CI^(-)`

Explanation

Conjugate acids of given bases are : `H_(2)O, ROH, CH_(3)CO OH, HCl`.
Their acidic strength is in the order `HCl gt CH_(3)CO OH gt H_(2)O gt ROH`.
Hence, their conjugate bases have strength in the order : `Cl^(-) lt CH_(3)CO O^(-) lt OH^(-) lt RO^(-)` or `RO^(-) gt OH^(-) gt CH_(3)CO O^(-) Cl^(-)`.