1.

NO_2 is involved in the formation of smog and acid rain.A reaction that is important in the formation of NO_3 is O_3 (g) + NO(g) iff O_2 (g) + NO_2(g) K_C = 6.0 xx 10^(34) . If the airover a section of New Delhi contained1.0 xx 10^(6) M " of " O_3, 1.0 xx 10^(-5) Mof NO, 2.5 xx 10^(-4)M of NO_2 and 8.2 xx 10^(-3) Mof O_2 , what canwe conclude ?

Answer»

there will betendency to FORM more `NO` and `O_ 2`
there will betendency to form more `NO_2` and `O_ 2`
there will betendency to form more `NO_2` and `O_ 3`
there will no tendency for chane because the REACTION is at equilibrium

Solution :`Q=([O_2][NO_2])/([O_(3)][NO])=([8.2 XX 10^(-3)][2.5 xx 10^(-4)])/([1.0 xx 10^(-6)][1.0 xx 10^(-5)])`
`=8.2 xx 2.5 xx 10^(4) = 20.5 xx 10^(4)`
As ` Q lt K_C`, the reaction will havea tendency to move forward .


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