1. berapakah pH larutan garam CH3COONa 0,1 M jika diketahui Ka CH3COOH=10 pangkat -5

[H+] = Ka . [garam]
[H+] = 10^-5 × 0,1
[H+] = 1×10^-6
Ph = -log [H+]
Ph = -log 1×10^-6
Ph = 6 -log 1
Ph= 6