1.

Hydrogen Peroxide in aqueous solutoin decomposes on warming to give oxygen according to the equation, 2H_(2)O_(2(aq))rarr2H_(2)O_((l))+O_(2(g)), under conditions where one mole of gas occupies 24dm^(3).100cm^(3) of .X.M solution H_(2)O_(2) produces 3dm^(3) of O_(2). Thus X is :

Answer»

`2.5`
`5.0`
`10.0`
`30.0`

SOLUTION :Volume strength = `(V_(O_(2)(STP)))/(V_("SOLN"))`
`n_(O_(2))=(3)/(24)=(1)/(8),V_(O_(2)(STP))=(1)/(8)xx22.4L`
IMPLIES Volume strength = `(22.4xx(1)/(8))/(0.1)`
`implies M=(V.S.)/(11.2)=(22.4)/(11.2xx0.1)XX(1)/(8)=2.5M`


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