Chemistry: Matter and Change
Chemistry: Matter and Change
1st Edition
ISBN: 9780078746376
Author: Dinah Zike, Laurel Dingrando, Nicholas Hainen, Cheryl Wistrom
Publisher: Glencoe/McGraw-Hill School Pub Co
Expert Solution & Answer
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Chapter 17.1, Problem 9SSC
Solution

Interpretation:

The homogeneous and heterogenous equilibrium system is to be compared.

Concept introduction:

- The two types of equilibrium system homogenous and heterogenous.

When all the reactants are in same phase, it is a homogenous system. When all the reactants are different phase, then it is a heterogenous system.

For homogenous system

A(g)+B(g)C(g)

For heterogenous system.

P(S)+Q(g)PQ(S)

In homogenous system substances are in same phase while in heterogenous the substance is in different phase.

Equilibrium system is of two types-

  1. Homogenous equilibrium: - The word ‘HOMO’ means same so, those equilibrium in which all the substances involved are in same phase are termed as homogenous equilibria.
  2. For e.g. −

    N2(g)+3H2(g)2NH3(g)

    In this all the substances involved are in gaseous phase so, it is a homogenous equilibrium.

    Equilibrium constant for this reaction is

    KC=[NH3(g)]2[N2(g)][H2(g)]3

    Or

    KP=(P2NH3)(PN2)(P3H2)

    in gases equilibrium constant is expressed in terms of partial pressure.

  3. Heterogenous equilibrium: - The word ‘HETERO’ means different. So, the equilibria in which all the substances involved are in different phases are called heterogenous equilibria.
  4. For example.

    a)H2O(l)H2O(g)b)CaCO3CaO(s)+CO2(g)

    Here some substance is in different phase while other are different. So, this system in heterogenous equilibria.

    In this system

    While writing equilibrium expression, certain conventions are followed.

    For example.

    a)BaSO3(s)BaO(s)+CO2(g)KC=[BaO(s)][CO2(g)][BaCO3(s)]

    Solids are omitted so, KC of this reaction

    KC=[CO2(g)]Kp=PCO2(g)

    b)NH3(aq)+H2O(l)NH4OH(aq)KC=[NH4OH(aq)][NH3(aq)][H2O(l)]H2O(l)=1

    So,

    KC=[NH4OH(aq)][NH3(aq)]Kp=[PNH4OH(aq)][PNH3(aq)]

In homogenous equilibria the substance involved are in same phase while in heterogenous equilibria the substance involved are in different phases.

Chapter 17 Solutions

Chemistry: Matter and Change

Ch. 17.1 - Prob. 11SSCCh. 17.1 - Prob. 12SSCCh. 17.2 - Prob. 13SSCCh. 17.2 - Prob. 14SSCCh. 17.2 - Prob. 15SSCCh. 17.2 - Prob. 16SSCCh. 17.2 - Prob. 17SSCCh. 17.3 - Prob. 18PPCh. 17.3 - Prob. 19PPCh. 17.3 - Prob. 20PPCh. 17.3 - Prob. 21PPCh. 17.3 - Prob. 22PPCh. 17.3 - Prob. 23PPCh. 17.3 - Prob. 24PPCh. 17.3 - Prob. 25PPCh. 17.3 - Prob. 26PPCh. 17.3 - Prob. 27SSCCh. 17.3 - Prob. 28SSCCh. 17.3 - Prob. 29SSCCh. 17.3 - Prob. 30SSCCh. 17.3 - Prob. 31SSCCh. 17.3 - Prob. 32SSCCh. 17 - Prob. 33ACh. 17 - Prob. 34ACh. 17 - Prob. 35ACh. 17 - Prob. 36ACh. 17 - Prob. 37ACh. 17 - Prob. 38ACh. 17 - Prob. 39ACh. 17 - Prob. 40ACh. 17 - Prob. 41ACh. 17 - Prob. 42ACh. 17 - Prob. 43ACh. 17 - Prob. 44ACh. 17 - Prob. 45ACh. 17 - Prob. 46ACh. 17 - Prob. 47ACh. 17 - Prob. 48ACh. 17 - Prob. 49ACh. 17 - Prob. 50ACh. 17 - Prob. 51ACh. 17 - Prob. 52ACh. 17 - Prob. 53ACh. 17 - Prob. 54ACh. 17 - Prob. 55ACh. 17 - Prob. 56ACh. 17 - Prob. 57ACh. 17 - Prob. 58ACh. 17 - Prob. 59ACh. 17 - Prob. 60ACh. 17 - Prob. 61ACh. 17 - Prob. 62ACh. 17 - Prob. 63ACh. 17 - Prob. 64ACh. 17 - Why are compounds such as sodium chloride usually...Ch. 17 - Prob. 66ACh. 17 - Prob. 67ACh. 17 - Prob. 68ACh. 17 - Prob. 69ACh. 17 - Prob. 70ACh. 17 - Prob. 71ACh. 17 - Prob. 72ACh. 17 - Prob. 73ACh. 17 - Prob. 74ACh. 17 - Prob. 75ACh. 17 - Prob. 76ACh. 17 - Prob. 77ACh. 17 - Prob. 78ACh. 17 - Evaluate this statement: A low value for Keq means...Ch. 17 - Prob. 80ACh. 17 - Prob. 81ACh. 17 - Prob. 82ACh. 17 - Prob. 83ACh. 17 - Prob. 84ACh. 17 - Prob. 85ACh. 17 - Prob. 86ACh. 17 - Prob. 87ACh. 17 - Prob. 88ACh. 17 - Prob. 89ACh. 17 - Prob. 90ACh. 17 - Prob. 91ACh. 17 - Prob. 92ACh. 17 - Prob. 93ACh. 17 - Prob. 94ACh. 17 - Prob. 95ACh. 17 - Prob. 96ACh. 17 - Prob. 97ACh. 17 - Prob. 98ACh. 17 - Prob. 99ACh. 17 - Prob. 100ACh. 17 - Prob. 101ACh. 17 - Prob. 102ACh. 17 - Prob. 103ACh. 17 - Prob. 104ACh. 17 - Prob. 105ACh. 17 - Prob. 1STPCh. 17 - Prob. 2STPCh. 17 - Prob. 3STPCh. 17 - Prob. 4STPCh. 17 - Prob. 5STPCh. 17 - Prob. 6STPCh. 17 - Prob. 7STPCh. 17 - Prob. 8STPCh. 17 - Prob. 9STPCh. 17 - Prob. 10STPCh. 17 - Prob. 11STPCh. 17 - Prob. 12STPCh. 17 - Prob. 13STPCh. 17 - Prob. 14STPCh. 17 - Prob. 15STPCh. 17 - Prob. 16STPCh. 17 - Prob. 17STPCh. 17 - Prob. 18STP
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