The reaction for the decomposition of PCl5 to chlorine and PCl3 is shown below. PCl5(g) ⇌ PCl3(g) + Cl₂(g) If the equilibrium concentrations are [PCl5] = 1.0 M, [PCl3] = 0.10 M, [Cl₂] = 0.10 M, what is the value of the equilibrium constant?

A) 1.0 × 10-2 B) 1.0 × 10-4 C) 10 × 10-2 D) 1.0 × 102 E) 2.0 × 10-2 A) 1.0 × 10-2 B) 1.0 × 10-4 C) 10 × 10-2 D) 1.0 × 102 E) 2.0 × 10-2

Exam 9: Reaction Rates and Chemical Equilibrium

In the reaction of carbon dioxide with water to give carbonic acid, the only gaseous component is the carbon dioxide. What will happen to the equilibrium concentration of carbonic acid if the pressure of carbon dioxide is increased in the container?

(Multiple Choice)

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Question 41

For the reaction of carbon with carbon dioxide to make carbon monoxide, the reaction is as follows. C(s) + CO₂(g) ⇌ 2CO(g) This is an example of a __________ equilibrium.

(Multiple Choice)

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Question 42

For the following reaction, the equilibrium constant Kc is 2.0 at a certain temperature. Write the equilibrium constant expression of the equilibrium constant, Kc. 2NOBr(g) ? 2NO(g) + Br?(g)

(Multiple Choice)

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Question 43

The __________ is the energy difference between reactants and products in a chemical reaction.

(Multiple Choice)

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Question 44

For the following equilibrium reaction, which cause and effect are correctly matched? CO(g) + 2H₂(g) ⇌ CH₃OH(g) + heat

(Multiple Choice)

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Question 45

An equilibrium constant with a value greater than 1 means the reaction favors the __________.

(Short Answer)

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Question 46

Iron metal reacts with oxygen gas to produce iron(III) oxide. What will be the effect of increasing the pressure of oxygen gas in a closed reaction vessel?

(Multiple Choice)

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Question 47

Indicate the effect of each change upon the rate of a reaction. -removing some reactant

(Multiple Choice)

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Question 48

An equilibrium constant greater than 1 for a reaction indicates that the reaction favors formation of the products.

(True/False)

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Question 49

An equilibrium constant Kc = 1 × 10⁷ for a reaction indicates that the reaction favors product formation.

(True/False)

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Question 50

Indicate the effect of each change upon the rate of a reaction. -adding a catalyst

(Multiple Choice)

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Question 51

A catalyst for a chemical reaction affects the magnitude of the equilibrium constant.

(True/False)

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Question 52

In the following gas phase reaction, what is the effect on the direction of the reaction if more SO₃ is added to the reaction mixture? 2SO₂(g) + O₂(g) ⇌ 2SO₃(g)

(Multiple Choice)

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Question 53

Any reaction that absorbs 150 kcal of energy can be classified as __________.

(Multiple Choice)

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Question 54

The reaction for the decomposition of PCl₅ to chlorine and PCl₃ is shown below. PCl₅(g) ⇌ PCl₃(g) + Cl₂(g) If the equilibrium concentrations are [PCl₅] = 1.0 M, [PCl₃] = 0.10 M, [Cl₂] = 0.10 M, what is the value of the equilibrium constant?

(Multiple Choice)

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Question 55

Indicate the effect of each change upon the rate of a reaction. -The concentration of a reactant is decreased.

(Multiple Choice)

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Question 56

Refrigerating perishable foods affects biochemical reactions by

(Multiple Choice)

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Question 57

Write the equilibrium constant expression for the reaction of nitrogen and hydrogen to give ammonia, NH₃.

(Short Answer)

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Question 58

In the reaction of nitrogen gas with oxygen gas to produce nitrogen oxide, what is the effect of adding more oxygen gas to the initial reaction mixture? The reaction is shown below. N₂(g) + O₂(g) ⇌ 2NO(g)

(Multiple Choice)

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Question 59

Which of the following equilibrium constants indicates the reaction that gives the smallest amount of product?

(Multiple Choice)

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Question 60

Showing 41 - 60 of 71

Exam 9: Reaction Rates and Chemical Equilibrium

In the reaction of carbon dioxide with water to give carbonic acid, the only gaseous component is the carbon dioxide. What will happen to the equilibrium concentration of carbonic acid if the pressure of carbon dioxide is increased in the container?

For the reaction of carbon with carbon dioxide to make carbon monoxide, the reaction is as follows. C(s) + CO₂(g) ⇌ 2CO(g) This is an example of a __________ equilibrium.

For the following reaction, the equilibrium constant Kc is 2.0 at a certain temperature. Write the equilibrium constant expression of the equilibrium constant, Kc. 2NOBr(g) ? 2NO(g) + Br?(g)

The __________ is the energy difference between reactants and products in a chemical reaction.

For the following equilibrium reaction, which cause and effect are correctly matched? CO(g) + 2H₂(g) ⇌ CH3OH(g) + heat

An equilibrium constant with a value greater than 1 means the reaction favors the __________.

Iron metal reacts with oxygen gas to produce iron(III) oxide. What will be the effect of increasing the pressure of oxygen gas in a closed reaction vessel?

Indicate the effect of each change upon the rate of a reaction. -removing some reactant

An equilibrium constant greater than 1 for a reaction indicates that the reaction favors formation of the products.

An equilibrium constant Kc = 1 × 107 for a reaction indicates that the reaction favors product formation.

Indicate the effect of each change upon the rate of a reaction. -adding a catalyst

A catalyst for a chemical reaction affects the magnitude of the equilibrium constant.

In the following gas phase reaction, what is the effect on the direction of the reaction if more SO₃ is added to the reaction mixture? 2SO₂(g) + O₂(g) ⇌ 2SO₃(g)

Any reaction that absorbs 150 kcal of energy can be classified as __________.

The reaction for the decomposition of PCl5 to chlorine and PCl3 is shown below. PCl5(g) ⇌ PCl3(g) + Cl₂(g) If the equilibrium concentrations are [PCl5] = 1.0 M, [PCl3] = 0.10 M, [Cl₂] = 0.10 M, what is the value of the equilibrium constant?

Indicate the effect of each change upon the rate of a reaction. -The concentration of a reactant is decreased.

Refrigerating perishable foods affects biochemical reactions by

Write the equilibrium constant expression for the reaction of nitrogen and hydrogen to give ammonia, NH3.

In the reaction of nitrogen gas with oxygen gas to produce nitrogen oxide, what is the effect of adding more oxygen gas to the initial reaction mixture? The reaction is shown below. N₂(g) + O₂(g) ⇌ 2NO(g)

Which of the following equilibrium constants indicates the reaction that gives the smallest amount of product?

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For the following equilibrium reaction, which cause and effect are correctly matched? CO(g) + 2H₂(g) ⇌ CH₃OH(g) + heat

An equilibrium constant Kc = 1 × 10⁷ for a reaction indicates that the reaction favors product formation.

The reaction for the decomposition of PCl₅ to chlorine and PCl₃ is shown below. PCl₅(g) ⇌ PCl₃(g) + Cl₂(g) If the equilibrium concentrations are [PCl₅] = 1.0 M, [PCl₃] = 0.10 M, [Cl₂] = 0.10 M, what is the value of the equilibrium constant?

Write the equilibrium constant expression for the reaction of nitrogen and hydrogen to give ammonia, NH₃.