Chemical Engineering - Stoichiometry - Discussion

Discussion Forum : Stoichiometry - Section 1 (Q.No. 20)
20.
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
1/9
8/9
1/2
5/9
Answer: Option
Explanation:
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Discussion:
11 comments Page 2 of 2.

I.SIVAREDDY said:   1 decade ago
Given that initial mass of H2 and CH4 are equal. And take each mass as m kg initially.

Mass of H2 = m kg moles of H2 = m/2;
Mass of CH4 = m kg moles of CH4 = m/16;

Mole fraction of H2 (yH2) = (moles of H2)/(moles of H2 + moles of CH4)

(yH2) = (m/2)/(m/2+m/16) = 8/9.


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