A sample of H2O2 solution labelled as "28 volume" has density of 265g/L. Mark the correct option(s) representing concentration of same solution in other units:
A
Molarity ofH2O2(MH2O2)=2.5
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B
%wv=17
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C
Mole fraction of H2O2=0.2
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D
Molality ofH2O2(mH2O2)=13.88
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Solution
The correct option is DMolality ofH2O2(mH2O2)=13.88 Given, ∴Molarity=volume strength11.2=2811.2=2.5 M ∴1L contain 2.5 moles of H2O2 Mass ofH2O2in 1 L solution(wH2O2)=2.5×34g=85gH2O2 Given, density of the solution(d)=265g/L Therefore weight of1 litre solution=265g ∴wH2O=265−85g=180gH2O=10 mol xH2O2=2.52.5+10=0.2 %wv=2.5×341000×100=8.5 mH2O2=2.5180×1000=13.88m