1.

An equilibriummixture in a vessel of capacity 100 litre contain 1 mol N_(2) , 2 mol O_(2) and 3 mol NO. NO. of mole of O_(2) to be added so that new equilibrium the conc. Of

Answer»

`(101//18)`
`101//9)`
`(202//9)`
NONE of these

Solution :`{:(N_(2),+,O_(2),hArr,2NO),(0.01M,,0.02M,,0.03M):}`
`K_(c) = (0.03^(2))/(0.01xx0.02) = 4.5`
Let a moles of `O_(2)` be ADDED
`{:(N_(2),+,O_(2),hArr,2NO),(0.01-x,,0.02+a-x,,0.03+2x):}`
`0.03+2x = 0.04`
`implies``x=0.005`
i.e.,`4.5 = ((0.04)^(2))/((0.015+a)(0.005))`
Moles of `O_(2)` added `=axx100 = (101)/(18)`


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