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155 solutions

Chemical Equilibrium

Q. Determine the equilibrium constant for the following reaction- Mg(OH)2(s) + 2 H+(aq)<---->Mg2+(aq) + 2 H2O(l) given the chemical reactions below. Mg(OH)2(s) <---->Mg2+(aq) + 2 OH–(aq) K = 5.6 x 10–12 H2O(l)<----> H+(aq) + OH–(aq) K = 1.0 x 10–14

Solved • Dec 10, 2019

Chemical Equilibrium

Q. The equilibrium constant, Kc , for the following reaction is 7.00×10-5 at 673 K. NH4I(s) <-->NH3(g) + HI(g) If an equilibrium mixture of the three compounds in a 4.23 L container at 673 K contains 3.76 mol of NH4I(s) and 0.243 mol of NH3, the number of moles of HI present is?

Solved • Dec 4, 2019

Chemical Equilibrium

Q. Excess mercury is placed in a 5L container which is then evacuated and filled with oxygen to a pressure of 6.23 Atm at 25oC. The container is sealed and heated to 300oC where the equilibrium: 2Hg(l) + O2(g) ⇄ 2HgO(s) is established. At equilibrium, the pressure in the container is 0.089 Atm. What is the equilibrium constant, Kp, for the reaction? a) 26.54 b) 0.089 c) 6.23 d) 11.24 e) There is not enough information to answer this question

Solved • Dec 3, 2019

Chemical Equilibrium

Q. The equilibrium constant for the gas phase reaction: 2 S O 3 ( g ) ⟺ 2 S O 2 ( g ) + O 2 ( g ) is Keq = 3.6 x 10^-3 at 999 K. At equilibrium, ___________. a. appreciable amounts of products and reactants are present. b. reactants predominate. c. products predominate. d. only reactants are present. e. only products are present.

Solved • Nov 18, 2019

Chemical Equilibrium

Q. Given the following reaction at equilibrium, if Kc = 1.90 x 1019 at 25.0°C, what is the value of Kp? H 2 ( g ) + B r 2 ( g ) ⟺ 2 H B r ( g ) a. 5.26 x 10-20 b. 1.90 x 1019 c. 6.02 x 1023 d. 1.56 x 104 e. 6.44 x 105

Solved • Nov 18, 2019

Chemical Equilibrium

Q. The equilibrium constant for the reaction 2NO(g) + Br2 <-> 2 NOBr is Kc = 2.7x10^-2 at a certain temperatute. Calculate Kc for NOBr(g)⇌NO(g)+1/2Br2(g).

Solved • Nov 18, 2019

Chemical Equilibrium

Q. At equilibrium, ___________. a. all chemical reactions have ceased. b. the limiting reactant has been consumed. c. the value of the equilibrium constant is 1. d. the rate constants of the forward and reverse reactions are equal. e. the rates of the forward and reverse reactions are equal.

Solved • Nov 18, 2019