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Equilibrium Expressions

#### Q. Dinitrogen tetraoxide and nitrogen dioxide are two gases that exist in equilibrium at a range of temperatures. NO2 is a reddish brown gas while N2O4 is colorless. If we represent the equilibrium as : N2O4(g) ⇌ 2 NO2(g) We conclude that : 2. When the temperature is decreased the equilibrium constant, K: a) Increases b) decreases c) Remain the same d) More information is needed to answer this question

Solved • Feb 19, 2020

Equilibrium Expressions

#### Q. For each of the following reactions, write the appropriate equilibrium equation. (Equilibrium expressions take the general form: Keq= [C]^c/{[A]^a[B]^b}. Subscripts and superscripts that include letters must be enclosed in braces {}.)

Solved • Feb 23, 2020

Equilibrium Expressions

#### Q. For a certain reaction, Kc = 6.43x10^-5 and kf = 7.86x10^5 M^-2 • s^-1 . Calculate the value of the reverse rate constant. kr, given that the reverse reaction is of the same molecularity as the forward reaction. Express your answer with the appropriate units. Include explicit multiplication within units, for example to enter M^-2 . s^-1 include. (multiplication dot) between each measurement.

Solved • Feb 15, 2020

Equilibrium Expressions

#### Q. For a different reaction , Kc = 1.12x10^7, kf = 9.62 x 10^5s^-1, and kr = 8.60x10^-2 s^ -1. Adding a catalyst increases the forward rate constant to 3.00x10^8s^-1. What is the new value of the reverse reaction constant, kr, after adding catalyst? Express your answer with the appropriate units. Include explicit multiplication within units, for example to enter M^-2 . s^-1 include. (multiplication dot) between each measurement.

Solved • Feb 15, 2020

Equilibrium Expressions

#### Q. The following pictures represent the equilibrium mixtures of five different chemical reactions. All the reactions proceed according to the general balanced chemical reaction A + B ⇌ AB Red spheres represent A atoms, blue spheres are B atoms, and red-blue clusters are AB molecules. Rank the reactions in order of increasing equilibrium constant. Rank the reactions from smallest to largest equilibrium constant To rank items as equivalent, overlap them.

Solved • Feb 15, 2020

Equilibrium Expressions

#### Q. For a different reaction, Kc = 1.11, kf = 82.6 s^-1, and kr = 74.6 s^-1. Adding a catalyst increases the forward rate constant to 2.40x10^4s^-1. What is the new value of the reverse reaction constant, kr, after adding catalyst? Express your answer with the appropriate units. Include explicit multiplication within units, for example to enter M^-2 . s^-1 include . (multiplication dot) between each measurement.

Solved • Feb 15, 2020

Equilibrium Expressions

#### Q. For a certain reaction, Kc = 8.23x10^10 and Kf = 145 M^-2 . s^-1. Calculate the value of the reverse rate constant, kr, given that the reverse reaction is of the same molecularity as the forward reaction. Express your answer with the appropriate units. Include explicit multiplication within units, for example to enter M^-2 . s^-1 include . (multiplication dot) between each measurement.

Solved • Feb 15, 2020