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Aijaz Haider

What is the pKb value for the acetate ion?

Daniel Silvers  Follow

To give you an answer I would have to look it up, since I don't routinely carry this type of information in my head. It would be quicker and easier for you to do the same.

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Brainfarction  Follow

What is the pKb value for the acetate ion?

According to the information in the Wikipedia article on the acid dissociation constant, [math]ext{p}K_ext{b}[/math], the logarithmic form of the base association constant [math]K_ext{b}[/math], is [math]ext{p}K_ext{b}=ext{p}K_ext{w}-ext{p}K_ext{a}[/math], where [math]ext{p}K_ext{a}[/math] is the logarithmic form of the acid’s dissociation constant [math]K_ext{a}[/math] and [math]ext{p}K_ext{w}[/math] is the logarithmic form of water’s self-ionization constant [math]K_ext{w}[/math].

At 25 °C, [math]ext{p}K_ext{w}[/math] = 13.997 and [math]ext{p}K_ext{a}[/math] (in water solution) is 4.756, so [math]ext{p}K_ext{b}[/math] = 9.241.

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