5. Berapa gram minimal NaCl (Mr=58,5) harus dimasukkan ke dalam 2 liter larutan 4x10-3 M Pb(NO3)2 agar terbentuk endapan Pb Cl2 ? (Ksp. PbCl2 = 4x10-12)
fatihahalhusna
![Ksp PbCl_2=[Pb^{2+}][Cl^-]^2\\4\times10^{-12}=[4\times10^{-3}][Cl^-]^2\\\\{[Cl^-]}=3,16\times10^{-5}\ M\\\\3,16\times10^{-5}=\displaystyle \frac{a}{58,5\times2}\\\\a=0,0037\ gram](https://tex.z-dn.net/?f=Ksp+PbCl_2%3D%5BPb%5E%7B2%2B%7D%5D%5BCl%5E-%5D%5E2%5C%5C4%5Ctimes10%5E%7B-12%7D%3D%5B4%5Ctimes10%5E%7B-3%7D%5D%5BCl%5E-%5D%5E2%5C%5C%5C%5C%7B%5BCl%5E-%5D%7D%3D3%2C16%5Ctimes10%5E%7B-5%7D%5C+M%5C%5C%5C%5C3%2C16%5Ctimes10%5E%7B-5%7D%3D%5Cdisplaystyle+%5Cfrac%7Ba%7D%7B58%2C5%5Ctimes2%7D%5C%5C%5C%5Ca%3D0%2C0037%5C+gram "Ksp PbCl_2=[Pb^{2+}][Cl^-]^2\\4\times10^{-12}=[4\times10^{-3}][Cl^-]^2\\\\{[Cl^-]}=3,16\times10^{-5}\ M\\\\3,16\times10^{-5}=\displaystyle \frac{a}{58,5\times2}\\\\a=0,0037\ gram")
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