0,1 mol CH3COONa ditambahkan ke dalam CH3COOH 0,5 M hingga volumenya 1 L (Ka HCOOH=1,8*10^-4). Hitung PH larutan
fatihahalhusna
![[H^+]=\displaystyle K_a\times\frac{mol\ CH_3COOH}{mol\ CH_3COONa}= 1,8\times10^{-4}\times\frac{0,1}{0,5\times1}=3,6\times10^{-5}\\\\\boxed{\bold{pH=5-log\ 3,6}}](https://tex.z-dn.net/?f=%5BH%5E%2B%5D%3D%5Cdisplaystyle+K_a%5Ctimes%5Cfrac%7Bmol%5C+CH_3COOH%7D%7Bmol%5C+CH_3COONa%7D%3D+1%2C8%5Ctimes10%5E%7B-4%7D%5Ctimes%5Cfrac%7B0%2C1%7D%7B0%2C5%5Ctimes1%7D%3D3%2C6%5Ctimes10%5E%7B-5%7D%5C%5C%5C%5C%5Cboxed%7B%5Cbold%7BpH%3D5-log%5C+3%2C6%7D%7D "[H^+]=\displaystyle K_a\times\frac{mol\ CH_3COOH}{mol\ CH_3COONa}= 1,8\times10^{-4}\times\frac{0,1}{0,5\times1}=3,6\times10^{-5}\\\\\boxed{\bold{pH=5-log\ 3,6}}")
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