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Introductory Chemistry: A Foundati...

9th Edition
Steven S. Zumdahl + 1 other
ISBN: 9781337399425

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BuyFindarrow_forward

Introductory Chemistry: A Foundati...

9th Edition
Steven S. Zumdahl + 1 other
ISBN: 9781337399425
Textbook Problem
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Are the following processes exothermic or endothermic?

ol type='a'>

  • When solid KBr is dissolved in water, the solution gets colder.
  • i>Natural gas (CH4) is burned in a furnace.

    i>When concentrated sulfuric acid is added to water, the solution gets very hot.

    i>Water is boiled in a teakettle.

    Interpretation Introduction

    (a)

    Interpretation:

    Whether the dissolving of KBr in water, process is exothermic or endothermic process should be determined.

    Concept Introduction:

    In a system when the heat energy is released to the surrounding is known as exothermic. When the heat is absorbed by the substance in the system it is known as endothermic.

    Explanation

    When KBr (potassium bromide) in the solid state is dissolved in water, the process is endothermic...

    Interpretation Introduction

    (b)

    Interpretation:

    Whether the burning of CH4 in furnace process is exothermic or endothermic process should be determined.

    Concept Introduction:

    In a system when the heat energy is released to the surrounding is known as exothermic. When the heat is absorbed by the substance in the system it is known as endothermic.

    Interpretation Introduction

    (c)

    Interpretation:

    Whether the addition of concentrated sulfuric acid to water is exothermic or endothermic process should be determined.

    Concept Introduction:

    In a system when the heat energy is released to the surrounding is known as exothermic. When the heat is absorbed by the substance in the system it is known as endothermic.

    Interpretation Introduction

    (d)

    Interpretation:

    Whether the boiling of water in a teakettle is exothermic or endothermic process should be determined.

    Concept Introduction:

    In a system when the heat energy is released to the surrounding is known as exothermic. When the heat is absorbed by the substance in the system it is known as endothermic.

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