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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_(2)O_(2)+2KI to 2KOH+I_(2)`
`W_(H_(2)O_(2))=(1.27)/(254)xx34 rArr ((W)/(V))%=3.4%`
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