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प्रश्न
Calculate the pOH of a buffer solution formed from 0.3 M weak base and 0.45 M of its salt with strong acid [pKb = 4.7447].
विकल्प
6.45
4.07
4.92
5.51
MCQ
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उत्तर
4.92
Explanation:
pOH = `pK_b + log (["Salt"])/(["Base"])`
= `4.7447 + log 0.45/0.3`
= 4.92
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