December 2019 1 42 Report
Jika 9 ml 0.1 M HCOOH (Ka = 10^-5) diencerkan 20 kali, kemudian ditambah larutan 20 ml 0.05 KOH, maka larutan yang terjadi memiliki pH sebesar...
A. 4-log5
B. 4-log 2
C. 8+log4
D. 10+log2
E. 11-log2

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