Among the followinga) On dilution, the pH of an acid increasesb) A solution with pH = 5 is 100 times more basic than a solution with pH = 3c) A solution with pH = 8 is 1000 times more acidic than a solution with pH = 11d) The pH of 10-9M KOH is slightly greater than 7

a) A decrease in the concentration of H+ increases the PH value.b) A unit distance in PH scale is equivalent to a factor of 10.d) Since the concentration of KOH is less than 10-6 M, we will have to consider the OH- ions furnished from water and proceed to calculate the final PH.