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Q.

Volume strength of 10%(w/v) H₂O₂ is approximately

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a

50

b

100

c

20

d

3.036

answer is C.

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Detailed Solution

10 volume strength of $\large \xrightarrow{gives}$ 10ml of O₂

??ml of H₂O₂ solution $\large \xrightarrow{gives}$ 1000ml of O₂

$\large \frac{1000 \times 1}{10} = 100ml$ of H₂O₂ solution

$\large 2H_2O_2 \xrightarrow{\Delta} 2H_2O_2+O_2$

2 moles 1mole

$\large 2\times34gr$ ----------------- 22400ml = 22.4lit

?? ------------------ 1000ml

$\large \frac{2 \times 34 \times 1000}{22400} = 3.03gr[w/v%]$

⇒ $\large \therefore$ 10 vol.strength of H₂O₂ means = 100ml of H₂O₂ solutions

= 3.03gr[w/v%] of H₂O₂ solution.

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Volume strength of 10%(w/v) H2O2 is approximately