At 298 K, the pH of a solution of lemon juice is 2.32 . What are the conc. Of ` [H_3O^(+)] and [OH^(-) ]` in this solutions?

Explanation

pH= `-log_(10)[H_(3)O^(+)]`
`log_(10)[H_(3)O^(+)]= -pH`
`[H_(3)O^(+)]= "antilog"_(10)(-pH)`
`="antilong"_(10)(-2.32)`
`=4.786 xx 10^(-3) mol L^(-1)`
`[OH^(-)]= (K_(sp))/([H_(3)O^(+)])`
`=(1.0 xx 10^(-14))/(4.786 xx 10^(-3))`
`=2.089 xx 10^(-12) mol L^(-1)`