Determine the hydronium and hydroxide ion concentrations in a solution that is 2.0 × 10-2 M NaOH

Answer 1

For OH- I got 2.0*10^-2 M
and for H30+ I got 2.0*10^-2 M

Is this correct?

Answer 2

in an aqueous solution , what is the product of [H3O+] and [OH-] ?

Answer 3

No, OH^- is correct but that can't possible be the same as H3O^+.

(H3O^+)(OH^-) = Kw = 1E-14. Substitute your OH^- and solve for H3O^+.