Reversible Reactions and Equilibrium

Question 1

Iodine and chlorine can react according to the following equation:At equilibrium, the concentration of ICl is about ten times higher than the concentrations of I2 or Cl2. Use the drop-down menu to complete each statement.At the beginning of the reaction, the forward reaction rate is the reverse reaction rate.

Revolt · Accepted Answer

greater than

Question 2

The reaction favors the The equilibrium li

Revolt · Accepted Answer

products.

Question 3

At equilibrium, the forward reaction rate is the reverse reaction rate.

Revolt · Accepted Answer

equal to

Question 4

Identify the substances that will appear in the equilibrium constant expression for the equation:Check all that apply.

Revolt · Accepted Answer

Ag+; Zn2+

Question 5

Acetic acid (CH3COOH) reacts with water to form the acetate ion and the hydronium ion:At equilibrium, the concentration of CH3COOH is 2.0 × 10–1 M, the concentration of CH3COO– is 1.9 × 10–3 M, and the concentration of H3O+ is 1.9 × 10–3 M. What is the value of Keq for this reaction?

Revolt · Accepted Answer

1.8 × 10–5

Question 6

Consider the following equilibrium:Which statement about this system is true?

Revolt · Accepted Answer

At equilibrium, the products are favored.

Question 7

Consider the following equilibrium:N2O4(g) 2NO2(g) Keq = 5.85 x 10-3Which statement about this system is true?

Revolt · Accepted Answer

The equilibrium lies to the left.

Question 8

If the equilibrium concentration of NO2 is 1.78 × 10–2 M, the equilibrium concentration of N2O4 is

Revolt · Accepted Answer

5.42 × 10⁻² M.

Question 9

If the equilibrium concentration of CO is 3.4 × 10–1 M, and the equilibrium concentrationof H2 is 6.8 × 10–1 M, the equilibrium concentration of CH3OH is

Revolt · Accepted Answer

4.1 M.

Reversible Reactions and Equilibrium Answers

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