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15,513 solutions

Equilibrium Expressions

Q. Bromine is one of the few elements that is a liquid at room temperature. It vaporizes easily and has a beautiful red color n both the liquid and gaseous states. Bromine reacts readily with hydrogen gas to make hydrogen bromide. One way to represent this equilibrium is: 2 HBr(g) ⇌ H2(g) + Br2(g) We could also write this reaction three other ways, listed below. The equilibrium constant for all of the reactions are related. Write the equilibrium constant for each new reaction in terms of K, the equilibrium constant for the reaction above. 1) HBr(g) ⇌ 1/2 H2(g) + 1/2 Br2(g) K1 = _____ 2) 1/2 H2(g) + 1/2 Br2(g) ⇌ HBr(g) K2 = _____ 3) H2(g) + Br2(g) ⇌ 2HBr(g) K3= _____

Solved • Feb 19, 2020

Chemical Equilibrium

Q. Given the two reactions: 1. H2S(aq) ⇌ HS^-(aq) + H^+(aq) K1 = 9.31 x 10^-8 and 2. HS^-(aq) ⇌ S^2-(aq) + H^+(aq) K2 = 1.13 x 10 -19 What is the equilibrium constant Kfinal for the following reaction? S^2-(aq) + 2H^+(aq) ⇌ H2S(aq) Enter your answer numerically.

Solved • Feb 14, 2020

Chemical Equilibrium

Q. Consider the reaction: 1/2 N2(g) + O2(g) ⇌ NO2(g) Write the equilibrium constant for this reaction in terms of the equilibrium constants, Ka and Kb, for reactions a and b below: a) N2O4(g) ⇌ 2NO2(g) Ka b) N2(g) + 2O2(g) ⇌ N2O4(g) Kb

Solved • Feb 19, 2020

Chemical Equilibrium

Q. Consider the reaction: N2O4(g) ⇌ 2NO2(g) Write the equilibrium constant for this reaction in terms of the equilibrium constants, Ka and Kb, for reactions a and b below: a) N2(g) + 2 O2(g) ⇌ N2O4(g) Ka b) 1/2 N2(g) + O2(g) ⇌ NO2(g) Kb

Solved • Feb 19, 2020

ICE Chart

Q. The equilibrium constant, Kc, for the following reaction is 77.5 at 600 K. CO(g) + Cl2(g) ⇌ COCl4(g) Calculate the equilibrium concentrations of reactant and products when 0.479 moles of CO and 0.479 moles of Cl2 are introduced into a 1.00 L vessel at 600 K.

Solved • Feb 19, 2020

ICE Chart

Q. The equilibrium constant, Kc, for the following reaction is 1.29 x 10^-2 at 600 K. COCl2(g) ⇌ CO(g) + Cl2(g) Calculate the equilibrium concentrations of reactant and products when 0.286 moles of COCl2(g) are introduced into a 1.00 L vessel at 600 K.

Solved • Feb 19, 2020

Equilibrium Expressions

Q. The equilibrium constant, Kp, for the following reaction is 0.110 at 298 K. NH4HS(s) ⇌ NH3(g) + H2S(g) If an equilibrium mixture of the three compounds in a 6.79 L container at 298 K contains 3.81 mol of NH4HS(s) and 0.150 mol of NH3(g), the partial pressure of H2S9g) is _____ atm.

Solved • Feb 19, 2020