The kilojoules of heat released when 125 g of Cl 2 reacts with silicon. Concept Introduction : A chemical reaction can be two types; endothermic and exothermic based on energy change during the reaction. An exothermic reaction occurs with release of energy that decreases the energy level of product compare to reactant whereas endothermic reactions occur with absorption of energy that increases the energy level of product molecule than reactant molecules.

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Answer 1

Question

Chapter 9.6, Problem 39PP

(a)

Interpretation Introduction

Interpretation : The kilojoules of heat released when 125 g of Cl2 reacts with silicon.

Concept Introduction : A chemical reaction can be two types; endothermic and exothermic based on energy change during the reaction. An exothermic reaction occurs with release of energy that decreases the energy level of product compare to reactant whereas endothermic reactions occur with absorption of energy that increases the energy level of product molecule than reactant molecules.

(b)

Interpretation Introduction

Interpretation : The kilojoules of heat absorbed when 278 g of PCl5 reacts should be calculated.

Concept Introduction : A chemical reaction can be two types; endothermic and exothermic based on energy change during the reaction. An exothermic reaction occurs with release of energy that decreases the energy level of product compare to reactant whereas endothermic reactions occur with absorption of energy that increases the energy level of product molecule than reactant molecules.

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Answer 2

Question

Chapter 9.6, Problem 39PP

(a)

Interpretation Introduction

Interpretation : The kilojoules of heat released when 125 g of Cl2 reacts with silicon.

Concept Introduction : A chemical reaction can be two types; endothermic and exothermic based on energy change during the reaction. An exothermic reaction occurs with release of energy that decreases the energy level of product compare to reactant whereas endothermic reactions occur with absorption of energy that increases the energy level of product molecule than reactant molecules.

(b)

Interpretation Introduction

Interpretation : The kilojoules of heat absorbed when 278 g of PCl5 reacts should be calculated.

Concept Introduction : A chemical reaction can be two types; endothermic and exothermic based on energy change during the reaction. An exothermic reaction occurs with release of energy that decreases the energy level of product compare to reactant whereas endothermic reactions occur with absorption of energy that increases the energy level of product molecule than reactant molecules.

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Answer 3

Question

Chapter 9.6, Problem 39PP

(a)

Interpretation Introduction

Interpretation : The kilojoules of heat released when 125 g of Cl2 reacts with silicon.

Concept Introduction : A chemical reaction can be two types; endothermic and exothermic based on energy change during the reaction. An exothermic reaction occurs with release of energy that decreases the energy level of product compare to reactant whereas endothermic reactions occur with absorption of energy that increases the energy level of product molecule than reactant molecules.

(b)

Interpretation Introduction

Interpretation : The kilojoules of heat absorbed when 278 g of PCl5 reacts should be calculated.

Concept Introduction : A chemical reaction can be two types; endothermic and exothermic based on energy change during the reaction. An exothermic reaction occurs with release of energy that decreases the energy level of product compare to reactant whereas endothermic reactions occur with absorption of energy that increases the energy level of product molecule than reactant molecules.

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Answer 4

Question

Chapter 9.6, Problem 39PP

(a)

Interpretation Introduction

Interpretation : The kilojoules of heat released when 125 g of Cl2 reacts with silicon.

Concept Introduction : A chemical reaction can be two types; endothermic and exothermic based on energy change during the reaction. An exothermic reaction occurs with release of energy that decreases the energy level of product compare to reactant whereas endothermic reactions occur with absorption of energy that increases the energy level of product molecule than reactant molecules.

(b)

Interpretation Introduction

Interpretation : The kilojoules of heat absorbed when 278 g of PCl5 reacts should be calculated.

Concept Introduction : A chemical reaction can be two types; endothermic and exothermic based on energy change during the reaction. An exothermic reaction occurs with release of energy that decreases the energy level of product compare to reactant whereas endothermic reactions occur with absorption of energy that increases the energy level of product molecule than reactant molecules.

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Answer 5

Chapter 9.6, Problem 39PP

(a)

Interpretation Introduction

Interpretation : The kilojoules of heat released when 125 g of Cl2 reacts with silicon.

Concept Introduction : A chemical reaction can be two types; endothermic and exothermic based on energy change during the reaction. An exothermic reaction occurs with release of energy that decreases the energy level of product compare to reactant whereas endothermic reactions occur with absorption of energy that increases the energy level of product molecule than reactant molecules.

(b)

Interpretation Introduction

Interpretation : The kilojoules of heat absorbed when 278 g of PCl5 reacts should be calculated.

Concept Introduction : A chemical reaction can be two types; endothermic and exothermic based on energy change during the reaction. An exothermic reaction occurs with release of energy that decreases the energy level of product compare to reactant whereas endothermic reactions occur with absorption of energy that increases the energy level of product molecule than reactant molecules.

Answer 6

Chapter 9.6, Problem 39PP

(a)

Interpretation Introduction

Interpretation : The kilojoules of heat released when 125 g of Cl2 reacts with silicon.

Concept Introduction : A chemical reaction can be two types; endothermic and exothermic based on energy change during the reaction. An exothermic reaction occurs with release of energy that decreases the energy level of product compare to reactant whereas endothermic reactions occur with absorption of energy that increases the energy level of product molecule than reactant molecules.

Answer 7

Chapter 9.6, Problem 39PP

(a)

Interpretation Introduction

Interpretation : The kilojoules of heat released when 125 g of Cl2 reacts with silicon.

Concept Introduction : A chemical reaction can be two types; endothermic and exothermic based on energy change during the reaction. An exothermic reaction occurs with release of energy that decreases the energy level of product compare to reactant whereas endothermic reactions occur with absorption of energy that increases the energy level of product molecule than reactant molecules.

Answer 8

(b)

Interpretation Introduction

Interpretation : The kilojoules of heat absorbed when 278 g of PCl5 reacts should be calculated.

Concept Introduction : A chemical reaction can be two types; endothermic and exothermic based on energy change during the reaction. An exothermic reaction occurs with release of energy that decreases the energy level of product compare to reactant whereas endothermic reactions occur with absorption of energy that increases the energy level of product molecule than reactant molecules.

Answer 9

(b)

Interpretation Introduction

Interpretation : The kilojoules of heat absorbed when 278 g of PCl5 reacts should be calculated.

Concept Introduction : A chemical reaction can be two types; endothermic and exothermic based on energy change during the reaction. An exothermic reaction occurs with release of energy that decreases the energy level of product compare to reactant whereas endothermic reactions occur with absorption of energy that increases the energy level of product molecule than reactant molecules.

Answer 10

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Answer 11

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Answer 12

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Answer 13

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Solution Summary: The author explains that a chemical reaction can be two types; endothermic and exothermistic based on energy change during the reaction.

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