October 2018 1 24 Report
Larutan dari 50 ml HCOOH 0,06 M dan 50ml HCOONa 0,04 M mempunyai pH = 4-log 2,7. jik ditambahkanair sebanyak 400 ml, maka pH larutan tersebut.. (Ka HCOOH = 1,8 x 10 pangkat -4)

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