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OH = n x mb
=1 x 0,02
=2 x 10^-2
poh = -log OH
= - log 2 x 10^-2
=2-log2
ph = 14 - 2- log 2
=12 - log 2
cari sendiri hsilnya 12 -log 2
poh = - log oh = - log 2 x 10^-2 = 2 - log 2
ph = pkw - poh
= 14 - ( 2- log 2 )
= 12 + log 2