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Calcualte [H^(+)] in a solution containing 0.1M HCOOH and 0.1M HCON.K_(a) for HCOOH and HOCN are 1.8xx10^(-4) and 3.3xx10^(-4).Take sqrt(50)=7.14 |
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Answer» SOLUTION :Given is the case of a mixture of two WEAK monoprotic acids So applying direct RELATION: `[H^(+)]=sqrt(C_(1)k_(a_(1))+C_(2)K_(a_(2)))` `=sqrt(0.1xx1.8xx10^(-4)+0.1xx3.3xx10^(-4))` `=7.14xx10^(-3)M` |
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