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Air contains nearly 20% oxygen by volume. The volume of air needed for complete combustion of 100 cc of acetylene will be
- a)500 cc
- b)1250 cc
- c)250 cc
- d)100 cc
Correct answer is option 'B'. Can you explain this answer?
Most Upvoted Answer
Air contains nearly 20% oxygen by volume. The volumeof air needed for ...
Equation
2 C2H2 + 5O2 → 4CO2 + 2 H2O
In this reaction, we can see that, 2 moles of C2H2reacts with 5 moles of O2
Or, 1 mole of C2H2 reacts with 5 / 2 moles of O2
Under standard conditions, we can say that:
22.44 L of C2H2 reacts with (5 / 2) x 22.4 L moles of O2
So, 100 cc of C2H2 will reacts with (5 / 2) x 100 cc = 250 cc of O2 .
But, since air contains 20 % of oxygen by volume, the amount of air needed to react with 100 cc of C2H2 will be = 250 x (100 / 20) = 1250 cc of air.
2 C2H2 + 5O2 → 4CO2 + 2 H2O
In this reaction, we can see that, 2 moles of C2H2reacts with 5 moles of O2
Or, 1 mole of C2H2 reacts with 5 / 2 moles of O2
Under standard conditions, we can say that:
22.44 L of C2H2 reacts with (5 / 2) x 22.4 L moles of O2
So, 100 cc of C2H2 will reacts with (5 / 2) x 100 cc = 250 cc of O2 .
But, since air contains 20 % of oxygen by volume, the amount of air needed to react with 100 cc of C2H2 will be = 250 x (100 / 20) = 1250 cc of air.
Community Answer
Air contains nearly 20% oxygen by volume. The volumeof air needed for ...
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Air contains nearly 20% oxygen by volume. The volumeof air needed for complete combustion of 100 cc ofacetylene will bea)500 ccb)1250 ccc)250 ccd)100 ccCorrect answer is option 'B'. Can you explain this answer?
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Air contains nearly 20% oxygen by volume. The volumeof air needed for complete combustion of 100 cc ofacetylene will bea)500 ccb)1250 ccc)250 ccd)100 ccCorrect answer is option 'B'. Can you explain this answer? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about Air contains nearly 20% oxygen by volume. The volumeof air needed for complete combustion of 100 cc ofacetylene will bea)500 ccb)1250 ccc)250 ccd)100 ccCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Air contains nearly 20% oxygen by volume. The volumeof air needed for complete combustion of 100 cc ofacetylene will bea)500 ccb)1250 ccc)250 ccd)100 ccCorrect answer is option 'B'. Can you explain this answer?.
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