AIPMT PRELIMS2008Chemistry-Stoichiometry
AIPMT PRELIMS 2008 Chemistry Combustion Reactions MCQ Question
Type: MCQ-conceptual-Medium-Class 11
What volume of oxygen gas (O₂) measured at 0°C and 1 atm, is needed to burn completely one litre, of propane gas (C₃H₈) measured under the same conditions ?
A
5 L
B
10 L
C
7 L
D
6 L
Correct Answer
Option A
Detailed Explanation
The balanced equation for the combustion of propane is C₃H₈ + 5O₂ → 3CO₂ + 4H₂O. Thus, 5 volumes of O₂ are needed for 1 volume of C₃H₈.
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