Determine pKa from Ka
8. Buffer and Isotonic Solution 8.1) Buffer 8.1.1) Determine pKa from Ka
8.1.1.1) Determine pKa from Ka Easy 1
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The dissociation constant (Ka value) of boric acid is 6.4 × 10−10. Determine the pKa of it.
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lb equals 9.19 kg
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Answer: 9.19 is the pKa of boric acid.
- The negative logarithm of Ka would give us the pKa value.
- The Ka provided in the question is 6.4 × 10−10
- Taking negative log of this number we get, —log( 6.4 × 10−10) or — (— 9.19) or 9.19
- Hence, the pKa is 9.19