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Larutan HNO3 = 0,5M
HNO3 + H2O =H2NO3
50 Ml + 150 Ml = 200 Ml
pH = - log [h⁺]
pH =-log 2 x 10∧-3,5
pH = -(-3,5 + log 2)
pH = 3,5 - log 2