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Answer:
12.55 → pH
Step-by-step explanation:
pH = - log [H⁺]
pH = 14 - pOH
pOH = - log [OH⁻]
pOH = - log 0.035 = 1.45
14 - 1.45 = 12.55 → pH
Remember that [OH⁻] . [H⁺] = 1×10⁻¹⁴ M
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