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OH-=√KW/KA XM
=√10^-14/4×10^-4 ×10^-2
=√4×10^-12
=2×10^-6
=6-LOG2
ph=14-6-LOG2
=8+LOG2
OH-=√KW/KA XM
=10^-14/4×10^-4×10^-2
=√4×10^-2
=2×10^-6
=6-LOG2
ph = 14-6-LOG2
=8+LOG2