1.

At a certain temperature the dissocation constants of formic acid and acetic acid are 1.8xx10^(-4) and 1.8xx10^(-6) respectively. The concentration of acetic acid solution in which the hydrogen ion has the same concentration as in 0.001 M formic acid solution is equal to

Answer»

0.001 M
0.01 M
0.1 M
0.0001 M

Solution :`[H^(+)]=SQRT(C xx K_(a))=sqrt(0.001xx1.8xx10^(-4))` for FORMIC acid
`[H^(+)]=sqrt(C_(2)xx1.8xx10^(-5))` for ACETIC acid Equating and SOLVING for `C_(2)=0.01 M`


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