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Hydrogen Peroxide

Equal volumes...

Question

Equal volumes of 20vol $H_{2} O_{2}$ , 25vol $H_{2} O_{2}$ and 50vol $H_{2} O_{2}$ are mixed. The normality of the resultant solution is

5.65

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2.68

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4.5

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8.0

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Solution

The correct option is A 5.65
Normality = 5.6 $\times$ volume strength
$N = \frac{N_{1} + N_{2} + N_{3}}{3} = \frac{\frac{20 + 25 + 50}{5.6}}{3} = 5.65 N$

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