Larutan KCN 0,1 M mempunyai pH = 11, berarti larutan tersebut di dalam air terhidrolisis........% (Ka HCN = 5 x 10-10).
fatihahalhusna
![pH~~~~=11\\pOH~~=3~\\~ [OH^-]=10^{-3}~M](https://tex.z-dn.net/?f=pH%7E%7E%7E%7E%3D11%5C%5CpOH%7E%7E%3D3%7E%5C%5C%7E+%5BOH%5E-%5D%3D10%5E%7B-3%7D%7EM "pH~~~~=11\\pOH~~=3~\\~ [OH^-]=10^{-3}~M")
![[OH^-]=\alpha.M\\ \alpha~~~~~~~=\frac{[OH^-]}{M}\\~~~~~~~~~~=\frac{[10^{-3}]}{0,1}\\~~~~~~~~~~=0,01\\~~~~~~~~~~=\boxed{1~persen}](https://tex.z-dn.net/?f=%5BOH%5E-%5D%3D%5Calpha.M%5C%5C+%5Calpha%7E%7E%7E%7E%7E%7E%7E%3D%5Cfrac%7B%5BOH%5E-%5D%7D%7BM%7D%5C%5C%7E%7E%7E%7E%7E%7E%7E%7E%7E%7E%3D%5Cfrac%7B%5B10%5E%7B-3%7D%5D%7D%7B0%2C1%7D%5C%5C%7E%7E%7E%7E%7E%7E%7E%7E%7E%7E%3D0%2C01%5C%5C%7E%7E%7E%7E%7E%7E%7E%7E%7E%7E%3D%5Cboxed%7B1%7Epersen%7D "[OH^-]=\alpha.M\\ \alpha~~~~~~~=\frac{[OH^-]}{M}\\~~~~~~~~~~=\frac{[10^{-3}]}{0,1}\\~~~~~~~~~~=0,01\\~~~~~~~~~~=\boxed{1~persen}")
0 votes
Thanks 1
