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A dilute solution of H(2)O(2) is labelle...

A dilute solution of `H_(2)O_(2)` is labelled as 20 volume . Its percentage strength is `:`

A

`30%`

B

`6%`

C

`3%`

D

`10%`

Text Solution

Verified by Experts

The correct Answer is:
b
`:" " 22.4` litres `O_(2)` at `N.T.P.` obtained by `68g` of `H_(2)O_(2)`
`:. 1 `litres `O_(2)`at `N.T.P. `obtained by `(68)/(22.4)g` of `H_(2)O_(2)`
`:. 20` litres `O_(2)` at `N.T.P.` obtained by
`(68)/(22.4)xx20g` of `H_(2)O =60.71 g `of `H_(2)O_(2)`
`:. 1000 ml O_(2) ` at `N.T.P.` obtained by `=60.71 g `of `H_(2)O_(2)`
`:. 100 ml O_(2)` at `N.T.P.` obtained by
`=(60.71)/(1000)xx100=6.71%`
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