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A sample of H(2)O(2) solution labelled a...

A sample of `H_(2)O_(2)` solution labelled as "28 volume" has density of 265 g/L. Mark the correct option(s) representing concentration of same solution in other units :

A

`M_(H_(2)O_(2))=2.5`

B

`% w/v=17`

C

Mole fraction of `H_(2)O_(2)=0.2`

D

m`m_(H_(2)O_(2))=13.88`

Text Solution

Verified by Experts

The correct Answer is:
A, C, D
`V_("strength"=56`'
`:. M=28/11.2 =2.5`
`:.` 1 L contain 2.5 moles of `H_(2)O_(2)`
or `2.5xx34=85 g H_(2)O_(2)`
wt. of 1 litre solution `=265 g" "( :' d=265 g//L)`
`:. w_(H_(2)O)=180 g`
or
number of moles of `H_(2)O=180/18=10`
`x_(H_(2)O_(2))=2.5/(2.5+10)=0.2`
`% w/v=(2.5xx34)/1000xx100=8.5`
`m=2.5/180xx1000=13.88`.
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