The expression for Kp for the reaction below is ________. 4CuO (s) + CH 4 (g) ↔ CO 2 (g) + 4Cu (s) + 2H 2 O (g)

[Cu](P CO2 )(P H2O ) 2 [CuO] 4 (P CH4 )

The equilibrium constant for the gas phase reaction N 2 (g) + 3H 2 (g) ↔ 2NH 3 (g) is Keq = 4.34 × 10 -3 at 300 °C. At equilibrium, ________.

reactants predominate (favored)

roughly equal amounts of products and reactants are present

The equilibrium constant for the gas phase reaction 2NH 3 (g) ↔ N 2 (g) + 3H 2 (g) is Keq = 230 at 300 °C. At equilibrium, ________.

roughly equal amounts of products and reactants are present

Of the following equilibria, only ________ will shift to the left in response to a decrease in volume.

2 SO 3 (g) ↔ 2 SO 2 (g) + O 2 (g)

N 2 (g) + 3H 2 (g) ↔ 2 NH 3 (g)

H 2 (g) + Cl 2 (g) ↔ 2 HCl (g)

In which of the following reactions would increasing pressure at constant temperature not change the concentrations of reactants and products, based on Le Châtelier's principle?

N 2 (g) + 3H 2 (g) ↔ 2NH 3 (g)

N 2 (g) + 2O 2 (g) ↔ 2NO 2 (g)

Consider the following reaction at equilibrium: 2CO 2 (g) ↔ 2CO (g) + O 2 (g) ΔH° = -514 kJ Le Châtelier's principle predicts that an increase in temperature will ________.

decrease the value of the equilibrium constant

decrease the partial pressure of CO 2 (g)

increase the value of the equilibrium constant

increase the partial pressure of O 2 (g)

Consider the following reaction at equilibrium. 2CO 2 (g) ↔ 2CO (g) + O 2 (g) ΔH° = -514 kJ Le Châtelier's principle predicts that the equilibrium partial pressure of CO (g) can be maximized by carrying out the reaction ________.

at low temperature and low pressure

at high temperature and high pressure

at high temperature and low pressure

at low temperature and high pressure

For the endothermic reaction CaCO 3 (s) ↔ CaO (s) + CO 2 (g) Le Châtelier's principle predicts that ________ will result in an increase in the number of moles of CO 2 .

removing some of the CaCO 3 (s)

Consider the following reaction at equilibrium: 2NH 3 (g) ↔ N 2 (g) + 3H 2 (g) ΔH° = +92.4 kJ Le Châtelier's principle predicts that removing N 2 from the system at equilibrium will result in ________.

an increase in the concentration of H 2

an increase in the value of the equilibrium constant

a decrease in the concentration of H 2

a lower partial pressure of H 2

General Equilibrium

Quiz

•

Chemistry

•

11th Grade - University

•

Practice Problem

•

Hard

•

NGSS

HS-PS1-7, HS-PS1-5, HS-PS1-6

Standards-aligned

Dana Shull

Used 35+ times

FREE Resource

36 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

Which of the following expressions is the correct equilibrium-constant expression for the equilibrium between dinitrogen tetroxide and nitrogen dioxide?

N₂O₄ (g) ↔ 2NO₂ (g)

[NO₂]²

[N₂O₄]

[NO₂]

[N₂O₄]²

[NO₂][N₂O₄]

[NO₂]²[N₂O₄]

2.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

At equilibrium, ________.

all chemical reactions have ceased

the rate constants of the forward and reverse reactions are equal

the rates of the forward and reverse reactions are equal

the value of the equilibrium constant is 1

3.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

Which one of the following will change the value of an equilibrium constant?

changing the volume of the reaction vessel

changing temperature

varying the initial concentrations of reactants

adding other substances that do not react with any of the species involved in the equilibrium

4.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

The equilibrium expression for Kp for the reaction below is ________.

2O₃ (g) ↔ 3O₂ (g)

3(P_O2)

2(P_O3)

(P_O2)³

(P_O3)²

2P_O3

3P_O2

(P_O3)²

(P_O2)²

5.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

The Keq for the equilibrium below is 7.52 × 10^-2 at 480.0 °C.

2Cl₂ (g) + 2H₂O (g) ↔ 4HCl (g) + O₂ (g)

What is the value of Keq at this temperature for the following reaction?

2HCl (g) + ½O₂ (g) ↔ Cl₂ (g) + H₂O (g)

-0.0376

5.66 × 10-3

0.274

3.65

The Keq for the equilibrium below is 0.112 at 700.0 °C.

SO₂ (g) + ½O₂ (g) ↔ SO₃ (g)
What is the value of Keq at this temperature for the following reaction?

SO₃ (g) ↔ SO₂ (g) + ½O₂ (g)

0.0125

-0.112

8.93

0.224

Given the following reaction at equilibrium, if Kc = 1.90 × 10¹⁹at 25.0 °C, Kp = ________.

H₂ (g) + Br₂ (g) ↔ 2 HBr (g)

1.90 × 10¹⁹

6.44 × 10⁵

1.56 × 10⁴

5.26 × 10^-20

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General Equilibrium

36 questions

Which of the following expressions is the correct equilibrium-constant expression for the equilibrium between dinitrogen tetroxide and nitrogen dioxide?

N₂O₄ (g) ↔ 2NO₂ (g)

At equilibrium, ________.

Which one of the following will change the value of an equilibrium constant?

The equilibrium expression for Kp for the reaction below is ________.

2O₃ (g) ↔ 3O₂ (g)

The Keq for the equilibrium below is 7.52 × 10^-2 at 480.0 °C.

2Cl₂ (g) + 2H₂O (g) ↔ 4HCl (g) + O₂ (g)

What is the value of Keq at this temperature for the following reaction?

2HCl (g) + ½O₂ (g) ↔ Cl₂ (g) + H₂O (g)

The Keq for the equilibrium below is 0.112 at 700.0 °C.

SO₂ (g) + ½O₂ (g) ↔ SO₃ (g)
What is the value of Keq at this temperature for the following reaction?

SO₃ (g) ↔ SO₂ (g) + ½O₂ (g)

Given the following reaction at equilibrium, if Kc = 1.90 × 10¹⁹at 25.0 °C, Kp = ________.

H₂ (g) + Br₂ (g) ↔ 2 HBr (g)

Which of the following expressions is the correct equilibrium-constant expression for the reaction below?

CO₂ (s) + H₂O (l)↔ H⁺ (aq) + HCO₃^- (aq)

The expression for Kp for the reaction below is ________.

4CuO (s) + CH₄ (g) ↔ CO₂ (g) + 4Cu (s) + 2H₂O (g)

The equilibrium constant for the gas phase reaction

N₂ (g) + 3H₂ (g) ↔ 2NH₃ (g)

is Keq = 4.34 × 10^-3 at 300 °C. At equilibrium, ________.

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General Equilibrium

36 questions

Which of the following expressions is the correct equilibrium-constant expression for the equilibrium between dinitrogen tetroxide and nitrogen dioxide? N2O4 (g) ↔ 2NO2 (g)

At equilibrium, ________.

Which one of the following will change the value of an equilibrium constant?

The equilibrium expression for Kp for the reaction below is ________.2O3 (g) ↔ 3O2 (g)

The Keq for the equilibrium below is 7.52 × 10-2 at 480.0 °C. 2Cl2 (g) + 2H2O (g) ↔ 4HCl (g) + O2 (g)What is the value of Keq at this temperature for the following reaction? 2HCl (g) + ½O2 (g) ↔ Cl2 (g) + H2O (g)

The Keq for the equilibrium below is 0.112 at 700.0 °C.SO2 (g) + ½O2 (g) ↔ SO3 (g)What is the value of Keq at this temperature for the following reaction?SO3 (g) ↔ SO2 (g) + ½O2 (g)

Given the following reaction at equilibrium, if Kc = 1.90 × 1019 at 25.0 °C, Kp = ________. H2 (g) + Br2 (g) ↔ 2 HBr (g)

Which of the following expressions is the correct equilibrium-constant expression for the reaction below? CO2 (s) + H2O (l)↔ H+ (aq) + HCO3- (aq)

The expression for Kp for the reaction below is ________. 4CuO (s) + CH4 (g) ↔ CO2 (g) + 4Cu (s) + 2H2O (g)

The equilibrium constant for the gas phase reaction N2 (g) + 3H2 (g) ↔ 2NH3 (g)is Keq = 4.34 × 10-3 at 300 °C. At equilibrium, ________.

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Which of the following expressions is the correct equilibrium-constant expression for the equilibrium between dinitrogen tetroxide and nitrogen dioxide?

N₂O₄ (g) ↔ 2NO₂ (g)

The equilibrium expression for Kp for the reaction below is ________.

2O₃ (g) ↔ 3O₂ (g)

The Keq for the equilibrium below is 7.52 × 10^-2 at 480.0 °C.

2Cl₂ (g) + 2H₂O (g) ↔ 4HCl (g) + O₂ (g)

What is the value of Keq at this temperature for the following reaction?

2HCl (g) + ½O₂ (g) ↔ Cl₂ (g) + H₂O (g)

The Keq for the equilibrium below is 0.112 at 700.0 °C.

SO₂ (g) + ½O₂ (g) ↔ SO₃ (g)
What is the value of Keq at this temperature for the following reaction?

SO₃ (g) ↔ SO₂ (g) + ½O₂ (g)

Given the following reaction at equilibrium, if Kc = 1.90 × 10¹⁹at 25.0 °C, Kp = ________.

H₂ (g) + Br₂ (g) ↔ 2 HBr (g)

Which of the following expressions is the correct equilibrium-constant expression for the reaction below?

CO₂ (s) + H₂O (l)↔ H⁺ (aq) + HCO₃^- (aq)

The expression for Kp for the reaction below is ________.

4CuO (s) + CH₄ (g) ↔ CO₂ (g) + 4Cu (s) + 2H₂O (g)

The equilibrium constant for the gas phase reaction

N₂ (g) + 3H₂ (g) ↔ 2NH₃ (g)

is Keq = 4.34 × 10^-3 at 300 °C. At equilibrium, ________.