Equilibrium Question 202

Question: If the solubility product of BaSO4 is 1.5×10−9 in water, its solubility in moles per litre, is [BHU 1995; MP PET 1995; UPSEAT 204]

Options:

A) 1.5×10−9

B) 3.9×10−5

C) 7.5×10−5

D) 1.5×10−5

Show Answer

Answer:

Correct Answer: B

Solution:

BaSO4 ⇌ Ba2++SO4−,− Solubility constant =S×S

1.5×10−19=S2 ; S=1.5×10−19 ; S=3.9×10−5

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