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A ideal gaseous mixture of ethane and ethene occupies 28 litres at 1 atm and 273K. The mixture reacts completely with 128 gm O2 to produce CO2 and H2O. Mole fraction of C2H6 in the mixture is?
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A ideal gaseous mixture of ethane and ethene occupies 28 litres at 1 a...
Given information:

  • Volume of the gaseous mixture = 28 L

  • Pressure of the gaseous mixture = 1 atm

  • Temperature of the gaseous mixture = 273 K

  • 128 g of O2 reacts completely with the mixture to produce CO2 and H2O



Step 1: Calculate the number of moles of O2 present in the mixture

  • Molar mass of O2 = 32 g/mol

  • Number of moles of O2 = mass/molar mass = 128/32 = 4 moles



Step 2: Write the balanced chemical equation for the reaction between the gaseous mixture and O2

  • C2H6 + 3O2 → 2CO2 + 3H2O



Step 3: Calculate the number of moles of C2H6 present in the mixture

  • From the balanced chemical equation, 1 mole of C2H6 reacts with 3 moles of O2

  • Number of moles of C2H6 = (4/3) moles



Step 4: Calculate the number of moles of C2H4 present in the mixture

  • From the balanced chemical equation, 1 mole of C2H4 reacts with 1 mole of O2

  • Number of moles of O2 required to react with (4/3) moles of C2H6 = (4/3) x 3 = 4 moles

  • Number of moles of C2H4 produced = number of moles of O2 consumed = 4 moles



Step 5: Calculate the total number of moles of gas present in the mixture

  • Number of moles of C2H6 = (4/3) moles

  • Number of moles of C2H4 = 4 moles

  • Total number of moles of gas present = (4/3) + 4 = (16/3) moles



Step 6: Calculate the mole fraction of C2H6 in the mixture

  • Mole fraction of C2H6 = number of moles of C2H6/total number of moles of gas present

  • Mole fraction of C2H6 = (4/3)/(16/3) = 0.25



Therefore, the mole fraction of C2H6 in the gaseous mixture is 0.25. This means that 25% of the total number of moles of gas present in the mixture is C2H6.
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A ideal gaseous mixture of ethane and ethene occupies 28 litres at 1 a...
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A ideal gaseous mixture of ethane and ethene occupies 28 litres at 1 atm and 273K. The mixture reacts completely with 128 gm O2 to produce CO2 and H2O. Mole fraction of C2H6 in the mixture is?
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A ideal gaseous mixture of ethane and ethene occupies 28 litres at 1 atm and 273K. The mixture reacts completely with 128 gm O2 to produce CO2 and H2O. Mole fraction of C2H6 in the mixture is? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about A ideal gaseous mixture of ethane and ethene occupies 28 litres at 1 atm and 273K. The mixture reacts completely with 128 gm O2 to produce CO2 and H2O. Mole fraction of C2H6 in the mixture is? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A ideal gaseous mixture of ethane and ethene occupies 28 litres at 1 atm and 273K. The mixture reacts completely with 128 gm O2 to produce CO2 and H2O. Mole fraction of C2H6 in the mixture is?.
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