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pH= 4 - log 2 = 4 - 0,3 = 3,7
[H+]
=√10pangkat-14 per 2x10pangkat-4 kali 4 x 10²
= √2x10pangkat-8
=2x10pangkat-4
pH = -log2x10pangkat-4 = 4-log2 = 4-0,3 = 7,3
jadikan yang terbaik ya