What volume of oxygen gas measured at 0∘C and 1 atm pressure is needed to burn 1 L of propane gas completely, measured under the same conditions?
A
10 L
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B
7 L
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C
6 L
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D
5 L
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Solution
The correct option is D 5 L C3H8+5O2→3CO2+4H2O At STP, 1 mole of a gas occupies 22.4 L 22.4 L of propane reacts with 5×22.4 L of O2 So, 1 L mole of propane gas will require 5 L of O2 for complete combustion.