A solution with a hydroxide ion concentration of 4.15 10^-3 m is basic and has a hydrogen ion concentration of 2.41 x10 ^-12
hydrogen ion calculation
= (H+) (OH-) = 1 x10^-14
let the concentration of H+ be represented by y
=( 4x10^-3)(y) = 1 x10^-14
divide both side by 4 x10^-3
y= 2.41 x10^-12m
