How do you calculate a Ka value from pKa?

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How do you calculate a Ka value from pKa?

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Answer 1 · 2016-02-02T19:53:39

$pK_a$ $=$ $-log_10K_a$ . Thus $K_a$ $=$ $10^(-pK_a)$

Explanation:

Remember your definitions for logarithmic functions. When we write $log_ab = c$ , we specify that $a^c =b$ . For example $log_(10)100 = 2$ , and $log_(10)1000 = 3$ . It follows that exceptionally strong acids have NEGATIVE $pK_a"'s"$ .

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How do you calculate a Ka value from pKa?

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