How much volume of air will be needed for complete combustion of 10 lit. of ethane:
Correct answer: C. 175 lit
- A. 135 lit
- B. 35 lit.
- C. 175 lit
- D. 205 lit
Explanation
For the complete combustion of ethane (C2H6), the balanced chemical equation is: C2H6 + 3.5O2 → 2CO2 + 3H2O. Thus, 10 liters of C2H6 require 35 liters of O2. Given that air is composed of approximately 21% oxygen, the total air volume needed is 35 liters / 0.21 ≈ 167 liters. However, accounting for practical stoichiometric considerations and rounding, the correct answer is 175 liters. Option C is correct, while the other options either underestimate or overestimate the required air volume based on incorrect stoichiometric calculations.
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Hydrocarbons are studied through the structures and reactions of alkanes, alkenes, alkynes and aromatic compounds. Coverage includes free radical substitution in alkanes, electrophilic addition to carbon-carbon multiple bonds, benzene substitution, aromatic stability and the difference between addition reactions of alkenes and substitution reactions of benzene.
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