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Ch.16 - Chemical Equilibrium
Chapter 16, Problem 64c

Consider this reaction at equilibrium: 2 BrNO(g) ⇌ 2 NO(g) + Br2(g) Predict whether the reaction will shift left, shift right, or remain unchanged after each disturbance. c. Br2 is removed from the reaction mixture.

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Key Concepts

Here are the essential concepts you must grasp in order to answer the question correctly.

Le Chatelier's Principle

Le Chatelier's Principle states that if a dynamic equilibrium is disturbed by changing the conditions, the position of equilibrium shifts to counteract the change. This means that if a reactant or product is added or removed, the system will adjust to restore equilibrium, favoring the side that can compensate for the disturbance.
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Le Chatelier's Principle

Equilibrium Constant (K)

The equilibrium constant (K) quantifies the ratio of the concentrations of products to reactants at equilibrium for a given reaction at a specific temperature. Changes in concentration, pressure, or temperature can affect the value of K, indicating how the equilibrium position shifts in response to disturbances in the system.
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Equilibrium Constant K

Reaction Quotient (Q)

The reaction quotient (Q) is a measure of the relative concentrations of products and reactants at any point in time, not just at equilibrium. By comparing Q to K, one can predict the direction in which the reaction will shift to reach equilibrium. If Q is less than K, the reaction will shift right to produce more products; if Q is greater than K, it will shift left to produce more reactants.
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Related Practice
Textbook Question

Consider the reaction: A(g) ⇌ B(g) + C(g) Find the equilibrium concentrations of A, B, and C for each value of Kc. Assume that the initial concentration of A in each case is 1.0 M and that the reaction mixture initially contains no products. Make any appropriate simplifying assumptions. b. Kc = 0.010

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Textbook Question

Consider this reaction at equilibrium: 2 BrNO(g) ⇌ 2 NO(g) + Br2(g) Predict whether the reaction will shift left, shift right, or remain unchanged after each disturbance. a. NO is added to the reaction mixture.

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Textbook Question

Consider this reaction at equilibrium: 2 BrNO(g) ⇌ 2 NO(g) + Br2(g) Predict whether the reaction will shift left, shift right, or remain unchanged after each disturbance. b. BrNO is added to the reaction mixture.

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Textbook Question

Consider this reaction at equilibrium: C(s) + H2O(g) ⇌ CO(g) + H2(g) Predict whether the reaction will shift left, shift right, or remain unchanged after each disturbance. a. C is added to the reaction mixture. b. H2O is condensed and removed from the reaction mixture. Predict whether the reaction will shift left, shift right, or remain unchanged after each disturbance. c. CO is added to the reaction mixture. d. H2 is removed from the reaction mixture.

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Textbook Question

Each reaction is allowed to come to equilibrium, and then the volume is changed as indicated. Predict the effect (shift right, shift left, or no effect) of the indicated volume change. a. I2( g) ⇌ 2 I( g) (volume is increased) b. 2 H2S( g) ⇌ 2 H2( g) + S2(g) (volume is decreased) c. I2(g) + Cl2(g) ⇌ 2 ICl(g) (volume is decreased)

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Textbook Question

Each reaction is allowed to come to equilibrium, and then the volume is changed as indicated. Predict the effect (shift right, shift left, or no effect) of the indicated volume change. a. CO(g) + H2O( g) ⇌ CO2(g) + H2(g) (volume is decreased)

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