Jawaban

pH = 12.87

Penjelasan

Diketahui :

• Volume larutan CH₃COOH = 30 mL
• Volume larutan NaOH = 200 mL
• [NaOH] = 0.1 M
• [CH₃COOH] = 0.1 M

mol CH₃COOH = 0.1 M x 0.03 L = 0.003 mol

mol NaOH = 0.1 M x 0.2 L = 0.02 mol

CH₃COOH + NaOH ==> CH₃COO Na + H₂O

0.003              0.02

-0.003           -0.003          +0.003       +0.003

-                      0.017             0.003          0.003

Karena sisa basa kuat maka : larutan basa (bukan penyangga).

Volume campuran = Vtotal = 200+30 = 230 mL = 0.23 L

[NaOH] = 0.017 mol / 0.23 L = 0.074 M

Perhitungan pH

Persamaan yang dapat dipakai :

Perhitungan :

Pelajari Lebih Lanjut

• Perhitungan pH NaOH : www.yomemimo.com/tugas/9616713