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hhhnnnvvv
@hhhnnnvvv
July 2022
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Молярная концентрация раствора HCN, pOH которого составляет 10, а степень диссоциации 2,5%, равна_____ моль/л
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dec77cat
POH=10
a=0,025
C-?
K=a²C/(1-a)
pH=-lg√(KC)=14-pOH
-lg√(a²C²/(1-a))=14-pOH
-lg(aC/√(1-a))=14-pOH
-lg(0,025C/√0,975)=4
C=0,00395 моль/л
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Answers & Comments
a=0,025
C-?
K=a²C/(1-a)
pH=-lg√(KC)=14-pOH
-lg√(a²C²/(1-a))=14-pOH
-lg(aC/√(1-a))=14-pOH
-lg(0,025C/√0,975)=4
C=0,00395 моль/л