A mixture contains 20cm3 of hydrogen, 35cm3 of oxygen, 15cm3 of carbon monoxide and 10cm3...

JAMB 1982

A mixture contains 20cm³ of hydrogen, 35cm³ of oxygen, 15cm³ of carbon monoxide and 10cm³ of nitrogen at S.T.P. Which of the following gives the mole fraction of hydrogen in this mixture?

A. 0.02
B. 0.16
C. 0.20
D. 0.25
E. 20

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Correct Answer: Option D

Explanation

H₂ = 20cm
O₂ = 35cm
N₂ = 10cm
CO = 15cm
Total vol = 80cm

Mole fraction of H₂ = (20)/(80) = 0.25

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A mixture contains 20cm3 of hydrogen, 35cm3 of oxygen, 15cm3 of carbon monoxide and 10cm3...

Correct Answer: Option D

Explanation

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