Calculate the pH of the following solutions with the given [H*] or [OH] and indicate wheather it is an acid or base: a. [H*]=0.000001
b. [OH]=0.001
c. [H*]=0.00000001
a. the concentraion of Hion is 10^-6
pH then is defined as - log10 (10^-6)=6
b. find [H] from [H][OH]=10^-14
then conc H= 10^-14 / 10^-3 =10^-11
then find pH