1.

5 moles of SO_(2) and 5 moles of O_(2) are allowed to react, At equilibrium, it was found that 60% of SO_(2) is used up. If the partial pressure of the equilibrium mixture is one atmosphere, the partial pressure of O_(2) is

Answer»

<P>0.52 atm
0.21 atm
0.41 atm
0.82 atm

Solution :`2SO_(2(g))+O_(2(g))hArr2SO_(3(g))`
Initially `5""5""0`
Degree of dissociation =0.60
`:.` no. of moles of `SO_(2)` at equilibrium =2
no. of moles of `O_(2)` at equilibrium =3.5
no. of moles of `SO_(3)` produced at equilibrium =3
`:.p_(O_(2))=(3.5xx1)/8.5=0.41` atm


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