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Molar and Specific Heat Capacity

Calculate the...

Question

Calculate the concentration of $H_{2} O_{2}$ in g/L in terms of volume strength at STP?

0.224 %

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2.24 %

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22.4 %

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22.7 %

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Solution

The correct option is A $0.224 %$
g eq of $H_{2} O_{2} =$ g eq of $K I =$ g eq of $N a_{2} S_{2} O_{3} = \frac{20 \times 0.1}{1000} = 0.002$ g eq
Normality of $H_{2} O_{2} = \frac{0.002 g e q}{50 m L} \times 1000 m L / L = 0.04 N$
Volume strength of $H_{2} O_{2} = 5.6 \times n o r m a l i t y = 5.6 \times 0.04 = 0.224$

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