pH = 4-log2.4 = 3.62 pOH 14 - pH = 14-3.62 = 10.38 concentration of OH- = 10^(- 14) / (2.4*10^(-4)) = 4.167* 10^(-11) Solution pH = 4-log2.4 = 3.62 pOH 14 - pH = 14-3.62 = 10.38 concentration of OH- = 10^(- 14) / (2.4*10^(-4)) = 4.167* 10^(-11).Read less