KspBaSO4 is 1.1×10−10. In which case BaSO4 is precipitated?
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a
100mL of 4×10−3MBaCl2+300mL of 6.0×10−4M Na2SO4
b
100mL of 4×10−4MBaCl2+300mL of 6.0×10−8M Na2SO4
c
300mL of 4×10−4MBaCl2+100mL of 6.0×10−8M Na2SO4
d
AII of the above
answer is A.
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Detailed Solution
Consider dilution factor due to mixing. BaSO4 is precipitated, ifBa2+SO42−>Ksp (1) Ba2+mix=4×10−34=10−3M SO42−mix =3×6×10−44=4.5×10−4M Ba2+SO42−=4.5×10−7>Ksp