Sebanyak 20 ml NaOH 0,30 M ditambahkan ke dalam 40 ml CH3COOH 0,15 M (Ka sama dengan 10 min 5) . harga Ph larutan campuran adalah....
fatihahalhusna
![[G]=\frac{6}{60}=0,1\ M\\\\\displaystyle [OH^-]=\sqrt{\frac{K_w.[G]}{K_a}}=\sqrt{\frac{10^{-14}\times0,1}{10^{-5}}}=10^{-5}\ M\\\\pOH=5\rightarrow pH=\boxed{9}](https://tex.z-dn.net/?f=%5BG%5D%3D%5Cfrac%7B6%7D%7B60%7D%3D0%2C1%5C+M%5C%5C%5C%5C%5Cdisplaystyle+%5BOH%5E-%5D%3D%5Csqrt%7B%5Cfrac%7BK_w.%5BG%5D%7D%7BK_a%7D%7D%3D%5Csqrt%7B%5Cfrac%7B10%5E%7B-14%7D%5Ctimes0%2C1%7D%7B10%5E%7B-5%7D%7D%7D%3D10%5E%7B-5%7D%5C+M%5C%5C%5C%5CpOH%3D5%5Crightarrow+pH%3D%5Cboxed%7B9%7D "[G]=\frac{6}{60}=0,1\ M\\\\\displaystyle [OH^-]=\sqrt{\frac{K_w.[G]}{K_a}}=\sqrt{\frac{10^{-14}\times0,1}{10^{-5}}}=10^{-5}\ M\\\\pOH=5\rightarrow pH=\boxed{9}")
0 votes
Thanks 1