Questions
CHM-1020-LD01.2025SU Exam 2
Single choice
If Kb for NH₃ is 1.8 × 10⁻⁵ at 25 0C, what is the pKa of its conjugate acid (NH₄⁺)?
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Step-by-Step Analysis
The task presents a question about acid-base equilibria involving NH3 and its conjugate acid NH4+.
First, recall the relationship between pKa and pKb for conjugate acid-base pairs at 25°C: pKa + pKb = pKw, where pKw ≈ 14.00.
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