Equilibrium Question 152

Question: The solubility product of BaSO4 at 25C is 1.0×109 . What would be the concentration of H2SO4 necessary to precipitate BaSO4 from a solution of 0.01,M,Ba2+ ions [RPMT 1999]

Options:

A) 109

B) 108

C) 107

D) 106

Show Answer

Answer:

Correct Answer: C

Solution:

BaSO4Ba++(S),,0.01,+SO4,(S),5,

Ksp=S2=S×S=0.01×S

S(SO42)=KspS(Ba++)=1×1090.01=107 mole/litre



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