Acid or Base equation?

Question

Determine if the following salt is neutral, acidic or basic. If acidic or basic, write the appropriate equilibrium equation for the acid or base that exists when the salt is dissolved in aqueous solution. If neutral, simply write only NR.

KIO

what I got was KIO(aq) + H2O(l) <-> HIO(aq) +KOH(aq), which is apparently incorrect, but I'm not sure what specifically is wrong.

Answer 1

One of the easiest ways to predict if the salt will be acidic, basic or neutral is to determine which acid and base were used to form the salt. In this case it would have come from KOH (base) and HIO (acid). Since this is a STRONG base and a WEAK acid, the salt will be basic.

The equilibrium expression would be...

IO^- + H₂O ==> HIO + OH^- (note the formation of OH^-, which explains why the solution is basic)