Among the following which one is correct for the estimation of iron?a.Mohr's Salt is used as an oxidizing agent for KMnO4 solutionb.Mohr's Salt undergoes reductionc.Solution of Mohr's salt is used as standard for KMnO4 solutiond.Alloy solution is a standard solutionClear my choice
Question
Among the following which one is correct for the estimation of iron?a.Mohr's Salt is used as an oxidizing agent for KMnO4 solutionb.Mohr's Salt undergoes reductionc.Solution of Mohr's salt is used as standard for KMnO4 solutiond.Alloy solution is a standard solutionClear my choice
Solution
The correct answer is c. Solution of Mohr's salt is used as standard for KMnO4 solution.
Here's why:
a. Mohr's Salt is not used as an oxidizing agent for KMnO4 solution. KMnO4 itself is a strong oxidizing agent.
b. Mohr's Salt undergoes oxidation, not reduction, in the reaction with KMnO4.
c. This is correct. In volumetric analysis, a solution of Mohr's salt is often used as a standard solution to estimate the concentration of KMnO4 solution.
d. Alloy solution is not a standard solution. It's a mixture of two or more metals.
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