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garam CH3COONa
ng = gr/Mr = gr/72
asam CH3COONa
V = 100 mL
M = 1 M
na = V M = 100 mmol
pH = 6
[H+] = 10^-6
Konsentrasi ion H+ untuk larutan buffer
[H+] = Ka na/ng
10^-6 = 10^-5 100/ng
10^-1 = 100/ng
ng = 1000 mmol = 1 mol
ng = gr/Mr
1 = gr/72
gr = 72 gram
Massa Natrium Asetat yang dicampurkan 72 gram.