November 2019 1 22 Report
Larutan penyangga dengan pH 5 dapat diperoleh dari campuran.... (Ka HCOOH = 10^-5 dan Kb NH3 = 10^-5)
A. 10 mL HCOOH 0,1 M + 5 mL HCOONa 0,1 M
B. 10 mL HCOOH 0,1 M + 5 mL NaOH 0,1 M
C. 10 mL HCOOH 0,1 M + 10 mL NaOH 0,1 M
D. 10 mL NH3 0,1 M + 10 mL NH4Cl 0,1 M
E. 10 mL NH3 0,1 M + 5 mL HCl 0,1 M

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