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Chemistry & Chemical Reactivity

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

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Chapter
Section
BuyFindarrow_forward

Chemistry & Chemical Reactivity

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

Identify whether the following processes are exothermic or endothermic. Is the sign on qsys positive or negative?

(a) combustion of methane

(b) melting of ice

(c) raising the temperature of water from 25 °C to 100 °C

(d) heating CaCO3(s) to form CaO(s) and CO2(g)

(a)

Interpretation Introduction

Interpretation:

The following process of the reaction is exothermic or endothermic has to be identified.

Concept Introduction:

When heat energy is transferred the directionality of heat transfer between the system and the surrounding is described either as endothermic or exothermic.

Explanation

Energy of the system decrease and energy of the surrounding increases, i.e qsys&#

(b)

Interpretation Introduction

Interpretation:

The following process of the reaction is exothermic or endothermic has to be identified.

Concept Introduction:

When heat energy is transferred the directionality of heat transfer between the system and the surrounding is described either as endothermic or exothermic.

(c)

Interpretation Introduction

Interpretation:

The following process of the reaction is exothermic or endothermic has to be identified.

Concept Introduction:

When heat energy is transferred the directionality of heat transfer between the system and the surrounding is described either as endothermic or exothermic.

(d)

Interpretation Introduction

Interpretation:

The following process of the reaction is exothermic or endothermic has to be identified.

Concept Introduction:

When heat energy is transferred the directionality of heat transfer between the system and the surrounding is described either as endothermic or exothermic.

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