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Chemistry & Chemical Reactivity

10th Edition
John C. Kotz + 3 others
ISBN: 9781337399074

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BuyFindarrow_forward

Chemistry & Chemical Reactivity

10th Edition
John C. Kotz + 3 others
ISBN: 9781337399074
Textbook Problem

Characterize each of the following as product- or reactant-favored at equilibrium.

  1. (a) CO(g) + ½ O2(g) ⇄ CO2(g)⇄Kp = 1.2 × 1045
  2. (b) H2O(g) ⇄ H2(g) + ½O2(g)⇄Kp = 9.1 × 10−41
  3. (c) CO(g) + Cl2(g) ⇄ COCl2(g)⇄Kp = 9.1 × 1011

(a)

Interpretation Introduction

Interpretation:

The given reaction has to be characterized as a product favoured or reactant favoured at equilibrium.

Concept Introduction:

Chemical equilibrium: A system is said to be in equilibrium if there is no tendency for the quantities of products and reactants to change.

The equilibrium constant value K indicates the nature of reactants and products in the equilibrium.

Equilibrium constantKC for a general reaction is:

aA(g)+bB(g)cC(g)+dD(g)KC=[C]c×[D]d[A]a×[B]b

When the product is more or product dominates the system K value will be large and in that system product will be favoured over reactants. When reactant dominates the system, K value will be small and reactants are favoured over products.

LargeK>1-ProductsarefavouredK=1-Neitherreactantsnorproductsarefavoured.SmallK<1-Reactantsarefavoured

Explanation

Given:

CO+12O2CO2KP=1.2×1045

Using the value of equilibrium constant, it is possible to identify the nature of the system.

When the product is more or product dominates the system K value will be large and in that system product will be favoured over reactants. When reactant dominates the system, K value will be small and reactants are favoured over products.

According to the concepts:

LargeK>1-Productsare

(b)

Interpretation Introduction

Interpretation:

The given reaction has to be characterized as a product favoured or reactant favoured at equilibrium.

Concept Introduction:

Chemical equilibrium: A system is said to be in equilibrium if there is no tendency for the quantities of products and reactants to change.

The equilibrium constant value K indicates the nature of reactants and products in the equilibrium.

Equilibrium constantKC for a general reaction is:

aA(g)+bB(g)cC(g)+dD(g)KC=[C]c×[D]d[A]a×[B]b

When the product is more or product dominates the system K value will be large and in that system product will be favoured over reactants. When reactant dominates the system, K value will be small and reactants are favoured over products.

LargeK>1-ProductsarefavouredK=1-Neitherreactantsnorproductsarefavoured.SmallK<1-Reactantsarefavoured

(c)

Interpretation Introduction

Interpretation:

The given reaction has to be characterized as a product favoured or reactant favoured at equilibrium.

Concept Introduction:

Chemical equilibrium: A system is said to be in equilibrium if there is no tendency for the quantities of products and reactants to change.

The equilibrium constant value K indicates the nature of reactants and products in the equilibrium.

Equilibrium constantKC for a general reaction is:

aA(g)+bB(g)cC(g)+dD(g)KC=[C]c×[D]d[A]a×[B]b

When the product is more or product dominates the system K value will be large and in that system product will be favoured over reactants. When reactant dominates the system, K value will be small and reactants are favoured over products.

LargeK>1-ProductsarefavouredK=1-Neitherreactantsnorproductsarefavoured.SmallK<1-Reactantsarefavoured

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