43. calculate the equilibrium constant at the temperature given. (a) o2 (g) + 2f2 (g) ⟶ 2f2 o(g) (t = 100 °c) (b) i2 (s) + br2 (l) ⟶ 2ibr(g) (t = 0.0 °c) (c) 2lioh(s) + co2 (g) ⟶ li2co3 (s) + h2 o(g) (t = 575 °c) (d) n2 o3 (g) ⟶ no(g) + no2 (g) (t = −10.0 °c) (e) sncl4 (l) ⟶ sncl4 (g) (t = 200 °c)

(a)

(b)

(c)

(d)

(e)

Explanation:

The equilibrium constant (Kc) is the product of the concentration of the products raised to their stoichiometric coefficients divided by the product of the concentration of the reactants raised to their stoichiometric coefficients. The equilibrium constant includes only gases and aqueous species (not liquids or solids). The temperature will define the state of aggregation of the substances and the numerical value of Kc.

(a) O₂(g) + 2 F₂(g) ⇄ 2 F₂O(g) (T = 100 °C)

(b) I₂(s) + Br₂(l) ⇄ 2 IBr(g) (T = 0.0 °C)

(c) 2 LiOH(s) + CO₂(g) ⇄ Li₂CO₃(s) + H₂O(g) (T = 575 °C)

(d) N₂O₃ (g) ⇄ NO(g) + NO₂(g) (T = −10.0 °C)

(e) SnCl₄(l) ⇄ SnCl₄(g) (T = 200 °C)

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