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NH3 + HCl --> NH4Cl
mula 20mmol 10mmol
reaksi 10mmol 10mmol 10 mmol#HCl sbg reksi pmbts
sisa 10 mmol 0 10
OH-= kb x nbasa/n garam
= 1x10^-5 x 10/10
=1x10^-5
5-log1
H+= 14-5-(log1)
=9+log1