Let the solubilities of AgCl in H2O; 0.01MCaCl2; 0.01MNaCl and 0.05MAgNO3 be s1,s2,s3 and s4 respectively. What is the correct relationship between these quantities?
A
s1>s2>s3>s4
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B
s1>s2=s3>s4
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C
s1>s3>s2>s4
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D
s4>s2>s3>s1
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Solution
The correct option is Bs1>s3>s2>s4 Solubility of AgCl inwater =√Ksp=s1
In 0.01MCaCl2, it is given by Ksp=s×(0.01×2+s) (∵s2=Ksp0.02)
In 0.01MNaCl, it is given by Ksp=s×(0.01+s) (∵s3=Ksp0.01)
In 0.05MAgNO3, it is given by Ksp=s×(0.05+s) (∵s4=Ksp0.05)
The solubilities are derived by neglecting s in comparison to 0.02,0.01 and 0.05.