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Grade: 11
        Equal weights of methane and hydrogen are mixed in an empty container at 25°C. the fraction of the total pressure exerted by hydrogen is 

a. 1/2
b. 8/9
c. 1/9
d. 16/17
5 years ago

Answers : (1)

Kevin Nash
askIITians Faculty
332 Points
							Sol. Let x grams of each hydrogen and methane are mixed,
Moles of H2 = x/2
Moles of CH4 = x/16
⇒ Mole-fraction of H2 = (x/2)/(x/2  + x/16)  =  8/9
⇒ (Partial pressure of H_2)/(Total pressure)  = mole-fraction of H2
= 8/9

						
5 years ago
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