Ka and Kb Video Lessons

Concept:

# Problem: Given that Ka for HF is 6.3 × 10-4 at 25 °C, what is the value of Kb for F– at 25 °C?

###### FREE Expert Solution

$\overline{){{\mathbf{K}}}_{{\mathbf{w}}}{\mathbf{=}}{{\mathbf{K}}}_{{\mathbf{a}}}{\mathbf{×}}{{\mathbf{K}}}_{{\mathbf{b}}}}\phantom{\rule{0ex}{0ex}}\phantom{\rule{0ex}{0ex}}{\mathbf{K}}_{{\mathbf{b}}}\mathbf{=}\frac{{\mathbf{K}}_{{\mathbf{w}}}}{{\mathbf{K}}_{{\mathbf{a}}}}$

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###### Problem Details

Given that Ka for HF is 6.3 × 10-4 at 25 °C, what is the value of Kb for F– at 25 °C?