Diketahui 500 ml larutan (NH4)2SO4 0,001 M Kb=2x10^-5. pH larutan tersebut adalah.......
a 5
b 6
c 7
d 8
e 9
bantu jawab pakai caranya ya
a 5
b 6
c 7
d 8
e 9
bantu jawab pakai caranya ya
fatihahalhusna
![[(NH_4)_2SO_4]=0,001\ M\rightarrow M=[NH_4^+]=0,002\ M\\\\{[H^+]}\displaystyle= \sqrt{\frac{K_w\times M}{K_b}}=\sqrt{\frac{10^{-14}\times 0,002}{2\times10^{-5}}}=10^{-6}\ M\\\\\boxed{\boxed{\bold{pH=6}}}](https://tex.z-dn.net/?f=%5B%28NH_4%29_2SO_4%5D%3D0%2C001%5C+M%5Crightarrow+M%3D%5BNH_4%5E%2B%5D%3D0%2C002%5C+M%5C%5C%5C%5C%7B%5BH%5E%2B%5D%7D%5Cdisplaystyle%3D+%5Csqrt%7B%5Cfrac%7BK_w%5Ctimes+M%7D%7BK_b%7D%7D%3D%5Csqrt%7B%5Cfrac%7B10%5E%7B-14%7D%5Ctimes+0%2C002%7D%7B2%5Ctimes10%5E%7B-5%7D%7D%7D%3D10%5E%7B-6%7D%5C+M%5C%5C%5C%5C%5Cboxed%7B%5Cboxed%7B%5Cbold%7BpH%3D6%7D%7D%7D "[(NH_4)_2SO_4]=0,001\ M\rightarrow M=[NH_4^+]=0,002\ M\\\\{[H^+]}\displaystyle= \sqrt{\frac{K_w\times M}{K_b}}=\sqrt{\frac{10^{-14}\times 0,002}{2\times10^{-5}}}=10^{-6}\ M\\\\\boxed{\boxed{\bold{pH=6}}}")
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