For this problem, we have to calculate the pH of a solution at 25°C in which [OH–] = 2.5 × 10–9 M.
In this case, calculate the pOH first:
pOH = -log(2.5x10-9 M)
pOH = 8.60
Find the pH of a solution at 25°C in which [OH–] = 2.5 × 10–9 M.
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