Moderate
Equal masses of CH4 and H2 are mixed in an empty container. The partial pressure of hydrogen in this container expressed as the fraction of total pressure is___________________?
Correct answer: B. 8/9
- A. 1/9
- B. 8/9
- C. 1/2
- D. 5/9
Explanation
For equal masses, hydrogen gives eight times as many moles as methane because their molar masses are 2 and 16 g/mol. Hence the hydrogen mole fraction, and therefore its pressure fraction, is 8/(8+1)=8/9.
Written and checked by Zahid Hussain, MS Computer ScienceLast updated
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