27.) Jika diket Ka HCN= 
, Maka pH larutan NaCN 0,001M adalah...
fatihahalhusna
![\displaystyle [OH^-]=\sqrt{\frac{K_w.M}{K_a}}=\sqrt{\frac{10^{-14}.0,001}{10^{-7}}}=10^{-5}\ M\\\\pOH=5\rightarrow \boxed{\bold{pH=9}}](https://tex.z-dn.net/?f=%5Cdisplaystyle+%5BOH%5E-%5D%3D%5Csqrt%7B%5Cfrac%7BK_w.M%7D%7BK_a%7D%7D%3D%5Csqrt%7B%5Cfrac%7B10%5E%7B-14%7D.0%2C001%7D%7B10%5E%7B-7%7D%7D%7D%3D10%5E%7B-5%7D%5C+M%5C%5C%5C%5CpOH%3D5%5Crightarrow+%5Cboxed%7B%5Cbold%7BpH%3D9%7D%7D "\displaystyle [OH^-]=\sqrt{\frac{K_w.M}{K_a}}=\sqrt{\frac{10^{-14}.0,001}{10^{-7}}}=10^{-5}\ M\\\\pOH=5\rightarrow \boxed{\bold{pH=9}}")
0 votes
Thanks 0
More Questions From This User See All