Answer to Question #185557 in General Chemistry for mike

Question

Write equilibrium constant expressions for each of the following equations.

(i). 2S02(g)    +    02(g)            2S03(g)

(ii) P4(s)    +     6H2(g)          4PH3(g)

(iii). 4NH3(g)    +     702(g)           4N02(g)    +     6H20(g)

Answer 1

For a general form equilibrium reaction

aA+bB⇌cC+dD

, whereA, B, C, and D

 are either gases or liquids

the equilibrium constant, K_c

, will take the form

K_c=[C]^c⋅[D]^d/[A]^a⋅[B]^b

I) K_c = (SO₃)²/(SO₂)² × O₂

ii) (PH₃)⁴/ P₄ ×(H₂)⁶

III) (NO₂)⁴ × (H₂O)⁶/(NH₃)⁴ × (O₂)⁷