A solution is made by reacting NH3 solution with HCN solution.If ka HCN=1x10^-4 and Kb NH3 1X10^-5,the ph solution is
fatihahalhusna
Asumsi HCN dan NH3 habis bereaksi
![[H^+]=\displaystyle \sqrt{\frac{K_w.K_a}{K_b}}=\sqrt{\frac{10^{-14}\times10^{-4}}{10^{-5}}}=10^{-6,5}\ M\\\\pH=\boxed{\boxed{\bold{6,5}}}](https://tex.z-dn.net/?f=%5BH%5E%2B%5D%3D%5Cdisplaystyle+%5Csqrt%7B%5Cfrac%7BK_w.K_a%7D%7BK_b%7D%7D%3D%5Csqrt%7B%5Cfrac%7B10%5E%7B-14%7D%5Ctimes10%5E%7B-4%7D%7D%7B10%5E%7B-5%7D%7D%7D%3D10%5E%7B-6%2C5%7D%5C+M%5C%5C%5C%5CpH%3D%5Cboxed%7B%5Cboxed%7B%5Cbold%7B6%2C5%7D%7D%7D "[H^+]=\displaystyle \sqrt{\frac{K_w.K_a}{K_b}}=\sqrt{\frac{10^{-14}\times10^{-4}}{10^{-5}}}=10^{-6,5}\ M\\\\pH=\boxed{\boxed{\bold{6,5}}}")
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