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Equal weights of methane and oxygen and mixed in an empty container at 25°C. The fraction of the total pressure exerted by oxygen is:
  • a)
    1/3
  • b)
    ½
  • c)
    2/3
  • d)
    (1/3) × (273/298)
Correct answer is option 'A'. Can you explain this answer?
Verified Answer
Equal weights of methane and oxygen and mixed in an empty container at...
Let the weights of methane and oxygen be m gm.

Mole fraction of oxygen, xO2 = m/32/(m/32 +m/16) = 1/3

Let the total pressure be P.

Partial pressure of O2, pO2 = P * xO2 = P x 1/3 = P/3
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Equal weights of methane and oxygen and mixed in an empty container at 25°C. The fraction of the total pressure exerted by oxygen is:a)1/3b)½c)2/3d)(1/3) × (273/298)Correct answer is option 'A'. Can you explain this answer?
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