Chemistry, 21.04.2020 00:22 donaji1024perez
1. The solubility of lead(II) chloride at some high temperature is 3.1 x 10-2 M. Find the Ksp of PbCl2 at this temperature.
2. The Ksp of Al(OH)3 is 1.0 x 10-33. What is the solubility of Al(OH)3 in 0.000010 M Al(NO3)3?
3. A precipitate of lead(II) chloride forms when 3.5 mg of NaCl is dissolved in 0.250 L of 0.12 M lead(II)nitrate.
A. True
B. False
Answers: 3
.
.
![K_{sp}=[Pb^{2+}][Cl^-]^2](/tpl/images/0613/6280/7fd11.png)
![K_{sp}=[Al^{3+}][OH^-]^3](/tpl/images/0613/6280/7ebc9.png)
![[NaCl]=\frac{6.0\times 10^{-5} mol}{0.250 L}=0.00024 M](/tpl/images/0613/6280/43d75.png)
![[Cl^-]=[NaCl]=0.00024 M](/tpl/images/0613/6280/2673a.png)
![n=0.12 M]\times 0.250 L=0.030 mol](/tpl/images/0613/6280/4f9f1.png)
![[Pb^{2+}]=[Pb(NO_2)_3]=0.030 M](/tpl/images/0613/6280/968f2.png)
![Q_i=[Pb^{2+}][Cl^-]^2=0.030 M\times (0.00024 M)^2=1.7\times 10^{-9}](/tpl/images/0613/6280/2c9a9.png)
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