5 Moles of SO2 and 5 moles of O2 are allowed to react. At equilibrium, it was found that 60% of SO2 is used up. If the pressure of the equilibrium mixture is one atmosphere, the partial pressure of O2 is

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0.52 atm

0.21 atm

0.41 atm

0.82 atm

answer is C.

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Detailed Solution

2SO2 + O2 ⇌ 2SO3 t=0 5mole 5 0 teq.; 5-2x 5-x 2x Given: (2x)=60100(5) x=1.5 , n=5-2x+5-x+2x=10-x Now PO2 =XO2 ·PTotal =5-x10-x×1=0.41atm

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