First slide

Hydrogen Peroxide

Question

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

Easy

A

100
B

20
C

3.036
D

50

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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