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Ch.16 - Chemical Equilibrium
Tro - Chemistry: A Molecular Approach 6th Edition
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Tutti i libri di testoTro 6th EditionCh.16 - Chemical EquilibriumProblema 68a
Capitolo 16, Problema 68a

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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Identify the reaction and the change applied: The reaction given is 2 BrNO(g) ⇌ 2 NO(g) + Br2(g), and the disturbance is the addition of NO(g) to the reaction mixture.
Recall Le Chatelier's Principle, which states that if a system at equilibrium is disturbed, it will adjust itself to counteract the disturbance and restore a new equilibrium.
Analyze the effect of adding NO(g): Adding more NO(g) increases the concentration of NO(g) on the right side of the equation.
Predict the shift due to the disturbance: According to Le Chatelier's Principle, increasing the concentration of a product (NO(g)) will shift the equilibrium to the left to reduce the concentration of NO(g) by converting it back to BrNO(g).
Conclude the direction of the shift: The reaction will shift to the left in response to the addition of NO(g).

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Le Chatelier's Principle

Le Chatelier's Principle states that if a dynamic equilibrium is disturbed by changing the conditions, the system will adjust to counteract the change and restore a new equilibrium. This principle helps predict the direction of the shift in equilibrium when a reactant or product concentration is altered.
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Le Chatelier's Principle

Equilibrium Constant (K)

The equilibrium constant (K) is a numerical value that expresses 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, influencing the position of equilibrium.
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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 determine the direction in which the reaction will shift to reach equilibrium: if Q < K, the reaction shifts right; if Q > K, it shifts left.
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Reaction Quotient Q
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Domanda del libro di testo

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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Domanda del libro di testo

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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Domanda del libro di testo

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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Domanda del libro di testo

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 removed from the reaction mixture.