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student-name Riya Vardhan asked in Science
A vessel contains equal masses of hydrogen, helium and methane. Find out the fractions of the partial pressures of the mixture.
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student-name Raveena Sharma answered this
1684 helpful votes in Science, Class VIII
1. Let the mass of all three gases be m.
Number of moles of H2 = given massmolar mass=m2
Number of moles of He = m4
Number of moles of CH4 = m16
2. Mole fractions:
Total moles = m2+m4+m16=13m16χH2 = m213m16=813χHe = m413m16=413χCH4 =m1613m16=113
3. Partial pressure:
pH2 = χH2 ×P = 8p13pHe =4p13pCH4 = p13 xplanation:
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