1.

There is a sample of 10 volume of hydrogen peroxide solution. Calculate its strength

Answer»

0.03
0.04045
0.02509
0.03035

Solution :`[H_(2)O_(2)to H_(2)O +1/2 O_(2)]xx2`
`underset(68)(2H_(2)O_(2)) to 2H_(2)O +O_(2) ` 22.4l at N.T.P.
`:'` 22.4 l `O_(2)` at N.T.P. OBTAINED by 68 gm of `H_(2)O_(2)`
`:.` 10 l `O_(2)` at N.T.P. obtained by
`=68/22.4 xx10=30.35` gm/l
`:.` 1000 ML `O_(2)` at N.T.P. obtained by 30.35 gm
`:.` 100 ml `O_(2)` at N.T.P. obtained by `=30.35/1000xx100=3.035%`


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