Hydrogen peroxide in aqueous solution decomposes on warming to give oxygen according to the equation: 2H2O2(aq)⟶2H2O(ℓ)+O2(g) Under conditions, where 1 mole of gas occupies 24dm3, 100cm3 of xM solution of H2O2 produces 3dm3 of O2. Thus, x is:
A
2.5
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B
1
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C
0.5
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D
0.25
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Solution
The correct option is C2.5 2 moles of H2O2 produces 1 mole of O2. At particular conditions, 1 mole of O2 occupies 24dm3.
So, 3dm3=324=0.125 moles of O2 This is produced in 100cm3=0.1 litres amount.