Question

H(g) + 92 conta 7. Consider the equilibrium: N:(g) + O2(g) + energy > N:O(g) For each of the following situations, use the concentration-time graphs below to illustrate the disturb ance and equilibrium shift. (KU - 1.5 marks cach, 9 marks total) b) a) Increase [NO] [N:) [Na] [03) [O] b) Decrease (0) IN:0) (N2O) O c) d) IN) [N] c) Increase temperature [02] [02] [NO] (N2O) d) Decrease volume of container. f) [N2] (N2) e) Decrease [N2] [02] (O2) f) Add a catalyst [NO] [N20) 8

Answer 1

a in system change to a 07 such a le - Chattier principle states that if chemical equillibaiat is subjected disturbance it teeds to change in that opposes the disturbance way >

N2 + 10 (Endothermic Ren.) > No 4) In Grease (N₂o equillibian shifts backward. 2 [Na] [₂] → increases an [N,0 ] → decreases shifts backward. 9 c) Increase temp temp. favors b) Decrease [02] equ [Na] Co,] - increase [N20] -1 decreases favors endothcomic oxu. 9" forward [N,₂0] → increases ; [02] ,(N) decreases to side of lessed moles . slifts d) Deore volume skifts equu seid lie. backward direction. [Na] CO2] -) increases ; N20) ► decreases - e) Decrease [Na] equi. shifts Backward. [N2], [2] increases ; [N₂o] - decreases f) Addin backward catalyst increase rate Both forward & equally ... No effect. on (NZ), Com]CN, 0] No effect

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