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Strength or concentration of H(2)O(2) so...

Strength or concentration of `H_(2)O_(2)` solution is expressed in the following ways: In terms of volume of `O_(2)` gas: The volume (in mL) of `O_(2)` gas produced at STP on heating one volume (or 1 mL) of `H_(2)O_(2)` solution is known as the concentration of `H_(2)O_(2)` solution. The commercial samples are marked as "10 volume, 20 volume 30 volume.etc..
`A5.0 mL` solution of Hydrogen peroxide liberates 1.27g of iodine from an acidified Kl solution. The percentage strength of `H_(2)O_(2)` is

A

11.2

B

5.6

C

1.7

D

3.4

Text Solution

Verified by Experts

The correct Answer is:
D
`H_2O_2 + 2KI to 2KOH + I_2`
`W_(H_2O_2) = 1.27/254xx34 rArr (W/V)% = 3.4%`
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