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OpenStudy (anonymous):
calculate the concentrationof sodium formate that must be present in a 0.1M solution of formis acid to produce a pH of 3.80. (Ka for formic acid =1.8*10^-4)
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OpenStudy (anonymous):
as reasction takes place as :- Na + HCOOH --->>>HCOONa +H^+
OpenStudy (anonymous):
now u can determine concentration of h^?+ by using formula of PH =-log [H^+] & ....simply apply formula for ka....
OpenStudy (anonymous):
as ka = [hcoona] [h+] / [Na] [hcooh]
OpenStudy (anonymous):
thanx
OpenStudy (anonymous):
ur welcome ...:)
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