Published by:
CGP EDU Academic Team
Published on: August 13, 2026
The concentration of bivalent lead ions in a sample of polluted water that also contains nitrate ions is determined by adding solid sodium sulphate ( 
142) to exactly 500 mL water. Calculate the molarity of lead ions if 0.450 gm of sodium sulphate was needed for complete precipitation of lead ions as sulphate.
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
C
Moles of 
req. 
Moles of 
ions
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