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3.95g KMNO4 was dissolved in 2.5l of water. 100 ml of this solution neutralizes a solution containing 1.25g of impure mixture of oxalic acid. What is the purity percentage of oxalic acid?

3.95g KMNO4 was dissolved in 2.5l of water. 100 ml of this solution neutralizes a solution containing 1.25g of impure mixture of oxalic acid. What is the purity  percentage of oxalic acid?

Grade:11

1 Answers

Vikas TU
14149 Points
5 years ago
We know that reaction of KMNO4 with oxalic acid takes place in different ways in different mediums.Generally we assume acidic medium so 5moles of KMNO4 will react with 2moles of oxalic acid so on balancint the weights the weight with which KMNO4 will react will be 0.01g of oxalic acid so the impurity is 99.2%.

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