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Hydrogen Peroxide

Find the volu...

Question

Find the volume of strength of $H_{2} O_{2}$ solutions prepared by mixing of 250 mL of 3 N $H_{2} O_{2}$ and 750 mL of 1 N $H_{2} O_{2}$ solution :-

A

1.5 V

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B

8.4 V

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C

5.6 V

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D

11.2 V

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Solution

The correct option is B 8.4 V
Normality of total solution is given by :

$N_{1} V_{1} + N_{2} V_{2} = N_{f} (V_{1} + V_{2})$

$(250 \times 3) + (750 \times 1) = N_{f} (250 + 750)$

$750 + 750 = N_{f} (1000)$

$N_{f} = \frac{1500}{1000}$ = $1.5$

Volume strength of $H_{2} O_{2} = 11.2 \times M$

In terms of normality, $N = M \times n$

n factor for $H_{2} O_{2}$ is 2

$N = M \times 2$ and $M = \frac{N}{2}$

Volume strength = $11.2 \times \frac{N}{2}$ = $5.6 N$ = $5.6 \times N o r m a l i t y$

Volume strength of $H_{2} O_{2}$ = $5.6 \times 1.5$ = $8.4 V$

Hence, option B is correct .

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