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Q.

A given solution of H₂O₂ is 30 volume. lts concentration in terms of molarity is:

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a

2.5 M

b

2.68 M

c

26.8 M

d

9.1M

answer is B.

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Detailed Solution

30 mL O₂ is obtained by $\frac{31 \times 30}{11200} {gH}_{2} O_{2} / mL$
$∴$ $M = \frac{34 \times 30 \times 1000}{11200 \times 34} = 2 .68 M$

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