NiO( s ) CO( g )Ni( s ) CO2( g ) K c 4000 0 at 1500 K If a mixture of ...

Ans Equilibrium concentration of CO 2 011997 M Explana ....

NiO(s)+CO(g)â‡ŒNi(s)+CO2(g) Kc=4000.0 at 1500 K If a mixture of solid nickel(II) oxide and 0.12000 M carbon monoxide is...

3.9 Ratings (450 Votes)

Ans :- Equilibrium concentration of CO₂ = 0.11997 M

Explanation :-

The ICE table for the given reaction is :

.......................NiO(s)............+.......................CO(g) <-----------> Ni(s)..............+.................CO₂(g)

Initial (I)..........................................................0.12000 M....................................................0.0 M

Change (C).......................................................- y...............................................................+ y

Equilibrium (E).............................................(0.12000-y) M....................................................y M

y = Number of moles dissociated per mole = ?

Expression of equilibrium constant i.e. K_c for the given reaction is :

K_c = [CO₂ (g)] / [CO(g)]

NOTE :- Concentration of pure liquids and solids are considered as constant while writing the expression of K_c.

4000.0 = y / (0.12000-y)

y = 480 - 4000.0 y

4001 y = 480

y = 0.11997 M

Hence, equilibrium concentration of CO₂ = y = 0.11997 M

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