tentuka pH larutan yang terjadi jika 200 ml larutan CH3COOH 0,1 M dicampurkan dengan 200 ml larutan NaOH 0,2 (Ka CH3 COOH = 10^-5l
Kimia
nov1511
Pertanyaan
tentuka pH larutan yang terjadi jika 200 ml larutan CH3COOH 0,1 M dicampurkan dengan 200 ml larutan NaOH 0,2 (Ka CH3 COOH = 10^-5l
1 Jawaban
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1. Jawaban BitterStep
n CH3COOH = 200 × 0.,1 = 20 mmol
n NaOH = 200 × 0,2 = 40 mmol
CH3COOH + NaOH = CH3COONa + H2O
20 40 - -
20 20 20 20
0 20 20 20
[H+] = ka × mol CH3COONa/mol NaOH
10^-5 × 20/20
10^-5
ph = 5