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5 moles of SO(2) and 5 moles of O(2) are...

5 moles of `SO_(2)` and 5 moles of `O_(2)` are allowed to react to form `SO_(3)` in a closed vessel. At the equilibrium stage, `60%SO_(2)` is used up. The total number of moles of `SO_(2),O_(2)andSO_(3)` in the vessel now is

A

`3.9`

B

`10.5`

C

`8.5`

D

`10.0`

Text Solution

Verified by Experts

The correct Answer is:
C
`{:(,2SO_(2),+,O_(2),iff,2SO_(3)),("Initial moles",5,,5,,),("At eqm.",5-(60)/(100)xx5,,5-1.5,,3),(,=5-3=2,,=3.5,,):}`
Total = `2+3.5+3=8.5`
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