1.

4 moles each of SO_(2) and O_(2) gases are allowed to react to from SO_(3) in a closed vassel. At equlibrium 25% of O_(2) is used up. The total number of moles of all the gases at equlibrium is

Answer»

`6.5`
`7.0`
`8.0`
`2.0`

Solution :`2SO+O_(2)hArr2SO_(3)`
`{:("INITIAL moles",4,4,0),("Moles at EQM.",4(1-0.25),4(1-0.25),0.25xx2),("TOTAL NUMBER of moles",=41,(1-0.25)+4,(1-0.25)+0.5):}`
`=4-1+4-1+0.5=6.5.`


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