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0,02 0,02 0,02
pH = 14 - log pOH
pH = 14 - log 0,02
pH = 12 + log 2
[H^+] = gr/Mr × 1/L
[H^+] = 3,7/74 × 1/10
[H^+] = 0,005 M
pH = - log [H^+]
pH = - log 0,005
pH = 3 - log 5