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K_(a)1 for butyricacidis 2xx10^(-5) .Calculate pH in 0.2M aqueoussolution butrae

Answer»

SOLUTION :`{:(NaBu,+,H_(2)O,hArr,NaOH,+,BuH),(1,,,,0,,0),((1-h),,,,h,,h):}`
` [OH^(-)] = Ch = C sqrt((Kh)/C)= sqrt (K_(n)C) = sqrt((K_(W)C)/(K_(a)))`
` sqrt((10^(-14)xx6.02 )/(2xx10^(-5))) = sqrt(10^(-19)) = 10^(-5)`
`[H^(+)]= 10^(-9)`
` :. pH = 9 `


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