Jawabanmu

2014-03-03T14:05:18+07:00
Mol HCOOH =40ml x 0,1 M= 4
mol NaOH = 20 x 0,2 = 4
mol total = 4 + 4 =8
H+ = nH+ tot/ vtot
     = 8/60 =0.13
pH larutan = -log 0,13=0,88
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