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Oxidising Reagent and Reducing Reagent

Calculate the...

Question

Calculate the volume of $0.1 M K M n O_{4}$ required to reach with $100 m l$ of $0.1 M H_{2} C_{2} O_{4} .2 H_{2} O$ solution in ?

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Solution

$2 K M n O_{4} + 5 H_{2} C_{2} O_{4} .2 H_{2} O + H_{2} S O_{4} ⇌ 2 M n S O_{4} + K_{2} S O_{4} + 10 C O_{2} + 10 H_{2} O$

Two moles of $K M n O_{4}$ reacts with 5 moles of oxalic acid.
$M_{1} V_{1} = M_{2} V_{2}$
$2 (0.1 * V_{1}) = 5 (0.1 * 100)$
$0.2 * V_{1} = 50 => x = 250 m l$

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