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NH₄OH + HCl ⇒ NH₄Cl + H₂O
m 160 mmol 160 mmol - -
b 160 mmol 160 mmol 160mmol 160 mmol
s - - 160mmol 160mmol
[garam] = 160 / 400 = 0,4
maka, [H⁺] = √Kw/Kb x [garam]
[H⁺] = √10⁻¹⁴/10⁻⁵ x 4.10⁻¹
[H⁺] = akar 4 x10⁻¹⁰
[H⁺] = 2 x 10⁻⁵
pH = 5-log2