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प्रश्न
The pH of a monoacidic weak base is 11.5. The concentration of OH− ions in this solution is ____________ M.
पर्याय
10−2·5
10−4·5
10−7·0
10−11·5
MCQ
रिकाम्या जागा भरा
उत्तर
The pH of a monoacidic weak base is 11.5. The concentration of OH− ions in this solution is 10−2·5 M.
Explanation:
pOH = 14 − pH
= 14 − 11.5
= 2.5
pOH = −log10 [OH−]
∴ [OH−] = 10−pOH
= 10−2·5 M
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