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01:160:162 Chapter 15: Chemistry 15.1-15.6

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15 Aug 2019

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Rutgers University

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Document Summary

The concentrations of the reactants and products in a reaction at equilibrium are described by the equilibrium constant, k. A large value of k means that the reaction lies far to the right at equilibrium - a high concentration of products and a low concentration of reactants. A small value of k means that the reaction lies far to the left at equilibrium- a high concentration of reactants and a low concentration of products. The value of k is a measure of how far a reaction proceeds- the larger the value of , the more the reaction proceeds toward the products. A reaction that can proceed in both the forward and reverse directions is said to be reversible. (when the concentration of the reactants decrease, this decreases the rate of the forward reaction) Dynamic equilibrium for a chemical reaction is the condition in which the rate of the forward reaction equals the rate of the reverse reaction.

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Related Questions

4. Consider the following: 2NH_3(g) â N_2(g)+ 3H_2(g)

A flask is initially filled with NH₃. As the system approaches equilibrium, the rate of the forward reaction

A. Increases as the rate of the reverse reaction decreases

B. Decreases as the rate of the reverse reaction increases

C. Increases as the rate of the reverse reaction increases

D. Decreases as the rate of the reverse reaction decreases

5. A system at equilibrium is said to be dynamic because at equilibrium the

A. Temperature does not change

B. Macroscopic properties are constant

C. Forward and reverse reactions continue to occur

D. Concentrations of reactants and products are constant

6. In all systems at equilibrium, the

A. Concentration of reactants is less than the concentration of products

B. Concentration of reactants and the concentration of products are equal

C. Concentration of reactants is greater than the concentration of products

D. Concentration of reactants and the concentration of products are constant

Show transcribed image text

Select all of the correct statements about equilibrium from the choices below.

At equilibrium the rates of forward and reverse reactions are equal.

At equilibrium the rate of change of reactant concentration is zero.

At equilibrium concentrations of reactants and products stay constant.

As a reaction proceeds backwards toward equilibrium the reverse rate drops.

At equilibrium the speed of a reaction equals its rate constant.

As a reaction proceeds forward toward equilibrium the forward rate drops.