What is the concentration of h+ ions at a ph = 8? mol/l  what is the concentration of oh– ions at a ph = 8? mol/l   what is the ratio of h+ ions to oh– ions at a ph = 8? : 1 or 1:  

what is the concentration of h+ ions at a ph = 8? :   0.00000001

what is the concentration of oh– ions at a ph = 8? : 0.000001

what is the ratio of h+ ions to oh– ions at a ph = 8? : 0.01: 1 or 1: 100

i guarantee you this i 100% correct, i hope i did not make a mistake on the zero's. plz correct me if i did!

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answer; direct observation;