Question

if Ka is 0.012 then what is the value of pKa


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Answer 1

Answer: . A smaller pKa value will correspond to a larger Ka value and hence a ... ten times higher than those in (b). ... moles NH3 = (0.013 - 0.0010) mol = 0.012 mol NH3.

Explanation: To create a more manageable number, chemists define the pKa value as the negative logarithm of the Ka value: pKa = -log Ka. If you already know the pKa value for an acid and you need the Ka value, you find it by taking the antilog.

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