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Question

The concentration of a solution of H2O2 is 6.8%(w/V) then the volume concentration of the solution is:-

A
22.4
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B
11.2
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C
20
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D
5
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Solution

The correct option is A 22.4
Given, 6.8 g of H2O2 is present in 100mL of the solution (6.8%w/V).

No. of moles of H2O2 is n=massMol.mass(H2O2)

n=6.834=0.2mol

And Volume of the soln, V=100mL or 0.1L

Now, Molarity of the solution,

M=mole of solutevolume of solution in (L) = 0.20.1=2M

We know that, Molarity =VolumeStrength11.2

⇒ Volume strength of the solution =Molarity×11.2

⇒ Volume strength of the solution =2×11.2=22.4

Hence, option A is correct.

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