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HCL + NH4OH >>>> NH4Cl + H2O
anggap volume NH4 Oh suatu variabel V
10 mmol HCL
0,2 V -10 mmol HCl karena basa sisa = mmol NH40h
mmol asam konjugasi (NH4 +) = 10 mmol pake prbandingan koefisien
ph = 9 PoH = 5 [OH-] = 10^-5
rmus pnyangga basa
[OH-] = kb × mmol basa / asam konjugasi
10 ^-5 = 10^-5 (0,2 V -10)/ 10
10 = 0,2 V-10
20 = 0,2 V
V = 100 ml
maaf jika salah