Answer:
[OH⁻] = 1.9 × 10⁻¹² M
Explanation:
The pH of lemon juice is 2.3. We can calculate the pOH using the following expression.
pH + pOH = 14
pOH = 14 - pH
pOH = 14 - 2.3 = 11.7
The pOH is 11.7. We can calculate the concentration of the hydroxide ion using its definition.
pOH = -log [OH⁻]
- pOH = log [OH⁻]
[OH⁻] = anti log (- pOH)
[OH⁻] = anti log (- 11.7)
[OH⁻] = 1.9 × 10⁻¹² M
