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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

Other solvents also undergo autoionization.

  1. (a) Write a chemical equation for the autoionization of glacial acetic acid.
  2. (b) The equilibrium constant for the autoionization of glacial acetic acid is 32 × 10−15 at 25°C. Determine the concentration of [CH3CO2H2]+ in acetic acid at 25°C.

(a)

Interpretation Introduction

Interpretation: The chemical equation for the autoionization of glacial acetic acid should be writtern.

Concept introduction:

Pure acetic acid is known as glacial acetic acid. It is similar to water that it can both act as an acid and a base. It is a weak acid or base that it can not completely dissociate in a solution.

An equilibrium constant (K) is the ratio of the concentration of products and reactants raised to appropriate stoichiometric coefficient at equilibrium. The self-ionization reaction of an acid HA is written as,

  HA(aq)H+(aq)+A(aq)

The relative strength of an acid and base in solution can be also expressed quantitatively with an equilibrium constant as follows:

Ka=[H+][A][HA]

The autoionization constant (K) of an acid is written as,

Ka=[H+][A][HA]Ka([HA])=[H+][A]K=[H+][A]                                                                                                (1)

Explanation

Pure acetic acid is known as glacial acetic acid. It is similar to water that it can both act as an acid and a base. It is a weak acid or base that it can not completely dissociate in a solution.

The chemical equation for the autoionization of glacial acetic acid is written as,

  2CH3

(b)

Interpretation Introduction

Interpretation:

The concentration of CH3COOH2+ in acetic acid at 25°C has to be calculated.

Concept Introduction:

Pure acetic acid is known as glacial acetic acid. It is similar to water that it can both act as an acid and a base. It is a weak acid or base that it can not completely dissociate in a solution.

An equilibrium constant (K) is the ratio of the concentration of products and reactants raised to appropriate stoichiometric coefficient at equilibrium.

The self-ionization reaction of an acid HA is written as,

  HA(aq)H+(aq)+A(aq)

The relative strength of an acid and base in solution can be also expressed quantitatively with an equilibrium constant as follows:

Ka=[H+][A][HA]

The autoionization constant (K) of an acid is written as,

Ka=[H+][A][HA]Ka([HA])=[H+][A]K=[H+][A]                                                                                               (1)

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Chapter 16 Solutions

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Sect-16.10 P-1.2ACPSect-16.10 P-1.3ACPSect-16.10 P-2.1ACPSect-16.10 P-2.2ACPSect-16.10 P-2.3ACPSect-16.10 P-2.4ACPSect-16.10 P-2.5ACPCh-16 P-1PSCh-16 P-2PSCh-16 P-3PSCh-16 P-4PSCh-16 P-5PSCh-16 P-6PSCh-16 P-7PSCh-16 P-8PSCh-16 P-9PSCh-16 P-10PSCh-16 P-11PSCh-16 P-12PSCh-16 P-13PSCh-16 P-14PSCh-16 P-15PSCh-16 P-16PSCh-16 P-17PSCh-16 P-18PSCh-16 P-19PSCh-16 P-20PSCh-16 P-21PSCh-16 P-22PSCh-16 P-23PSCh-16 P-24PSCh-16 P-25PSCh-16 P-26PSCh-16 P-27PSCh-16 P-28PSCh-16 P-29PSCh-16 P-30PSCh-16 P-31PSCh-16 P-32PSCh-16 P-33PSCh-16 P-34PSCh-16 P-35PSCh-16 P-36PSCh-16 P-37PSCh-16 P-38PSCh-16 P-39PSCh-16 P-40PSCh-16 P-41PSCh-16 P-42PSCh-16 P-43PSCh-16 P-44PSCh-16 P-45PSCh-16 P-46PSCh-16 P-47PSCh-16 P-48PSCh-16 P-49PSCh-16 P-50PSCh-16 P-51PSCh-16 P-52PSCh-16 P-53PSCh-16 P-54PSCh-16 P-55PSCh-16 P-56PSCh-16 P-57PSCh-16 P-58PSCh-16 P-59PSCh-16 P-60PSCh-16 P-61PSCh-16 P-62PSCh-16 P-63PSCh-16 P-64PSCh-16 P-65PSCh-16 P-66PSCh-16 P-67PSCh-16 P-68PSCh-16 P-69PSCh-16 P-70PSCh-16 P-71PSCh-16 P-72PSCh-16 P-73PSCh-16 P-74PSCh-16 P-75PSCh-16 P-76PSCh-16 P-77PSCh-16 P-78PSCh-16 P-79PSCh-16 P-80PSCh-16 P-81PSCh-16 P-82PSCh-16 P-83PSCh-16 P-84PSCh-16 P-85GQCh-16 P-86GQCh-16 P-87GQCh-16 P-88GQCh-16 P-89GQCh-16 P-90GQCh-16 P-91GQCh-16 P-92GQCh-16 P-93GQCh-16 P-94GQCh-16 P-95GQCh-16 P-96GQCh-16 P-97GQCh-16 P-98GQCh-16 P-99GQCh-16 P-100GQCh-16 P-101GQCh-16 P-102GQCh-16 P-103GQCh-16 P-104GQCh-16 P-105GQCh-16 P-106GQCh-16 P-107GQCh-16 P-108GQCh-16 P-109GQCh-16 P-110GQCh-16 P-111ILCh-16 P-112ILCh-16 P-113ILCh-16 P-114ILCh-16 P-115ILCh-16 P-116ILCh-16 P-117ILCh-16 P-118ILCh-16 P-119SCQCh-16 P-120SCQCh-16 P-121SCQCh-16 P-122SCQCh-16 P-123SCQCh-16 P-124SCQCh-16 P-125SCQCh-16 P-126SCQCh-16 P-127SCQCh-16 P-128SCQCh-16 P-129SCQ

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