The heat of combustion of acetylene has to be calculated and the answer should be reported in kilojoules per mole (kJ/mol) and in kilojoules per gram (kJ/g). Concept Introduction: Heat of combustion: It is also known as potential heat of fuel. Heat of combustion of carbon depends on its allotropic form. A fuel is a substance which releases energy in the form of heat while undergoing combustion. Hydrocarbons which have high heats of combustion make it a best fuel. Combustion reaction: It is the reaction in which hydrocarbons are heated in presence of oxygen results to give water and carbon dioxide with heat. Bond dissociation enthalpy: Bond energy or more correctly the bond dissociation enthalpy is the enthalpy change when breaking a bond in a molecule with the reactant and products in the gas phase. Δ r H 0 = Σ Δ H ( b o n d s b r o k e n ) − Σ Δ H ( b o n d s f o r m e d )

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Answer 1

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Formula Formula Bond dissociation energy (BDE) is the energy required to break a bond, making it an endothermic process. BDE is calculated for a particular bond and therefore consists of fragments such as radicals since it undergoes homolytic bond cleavage. For the homolysis of a X-Y molecule, the energy of bond dissociation is calculated as the difference in the total enthalpy of formation for the reactants and products. X-Y → X + Y BDE = Δ H f X + Δ H f Y – Δ H f X-Y where, ΔHf is the heat of formation.

Chapter 5.5, Problem 5.13YT

Interpretation Introduction

Interpretation:

The heat of combustion of acetylene has to be calculated and the answer should be reported in kilojoules per mole (kJ/mol) and in kilojoules per gram (kJ/g).

Concept Introduction:

Heat of combustion: It is also known as potential heat of fuel. Heat of combustion of carbon depends on its allotropic form.

A fuel is a substance which releases energy in the form of heat while undergoing combustion. Hydrocarbons which have high heats of combustion make it a best fuel.

Combustion reaction: It is the reaction in which hydrocarbons are heated in presence of oxygen results to give water and carbon dioxide with heat.

Bond dissociation enthalpy:

Bond energy or more correctly the bond dissociation enthalpy is the enthalpy change when breaking a bond in a molecule with the reactant and products in the gas phase.

ΔrH0 = Σ ΔH (bonds broken) −Σ ΔH (bonds formed)

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Practice Exercise 1The coinage metals (Group 1B) copper, silver, and gold havespecific heats of 0.385, 0.233, and 0.129 J/g-K, respectively.Among this group, the specific heat capacity andthe molar heat capacity as the atomic weightincreases. (a) increases, increases (b) increases, decreases(c) decreases, increases (d) decreases, decreases

Trial 1: Goldfish Mass of Empty Can (g) 12.715 g Mass of Can + Water (g) 112.831 g Mass of water (g) Mass of food + clip + foil + cork (g) BEFORE 5.285 g Mass of food + clip + foil + cork (g) AFTER 5.002 g Mass of Food Lost (g) INITIAL temperature (oC) 19.0 oC FINAL temperature (oC) 24.1 oC Temp Change (ΔT) How much energy (in Calories, ie. kcal) was produced by burning the Goldfish? (Specific Heat of water is 4.184 J/gC or 1.000 cal/gC)

Exercise 97 has a heat capacity of 6.66 KJ/ degree C.

Answer 2

Question

Formula Formula Bond dissociation energy (BDE) is the energy required to break a bond, making it an endothermic process. BDE is calculated for a particular bond and therefore consists of fragments such as radicals since it undergoes homolytic bond cleavage. For the homolysis of a X-Y molecule, the energy of bond dissociation is calculated as the difference in the total enthalpy of formation for the reactants and products. X-Y → X + Y BDE = Δ H f X + Δ H f Y – Δ H f X-Y where, ΔHf is the heat of formation.

Chapter 5.5, Problem 5.13YT

Interpretation Introduction

Interpretation:

The heat of combustion of acetylene has to be calculated and the answer should be reported in kilojoules per mole (kJ/mol) and in kilojoules per gram (kJ/g).

Concept Introduction:

Heat of combustion: It is also known as potential heat of fuel. Heat of combustion of carbon depends on its allotropic form.

A fuel is a substance which releases energy in the form of heat while undergoing combustion. Hydrocarbons which have high heats of combustion make it a best fuel.

Combustion reaction: It is the reaction in which hydrocarbons are heated in presence of oxygen results to give water and carbon dioxide with heat.

Bond dissociation enthalpy:

Bond energy or more correctly the bond dissociation enthalpy is the enthalpy change when breaking a bond in a molecule with the reactant and products in the gas phase.

ΔrH0 = Σ ΔH (bonds broken) −Σ ΔH (bonds formed)

Expert Solution & Answer

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Check out a sample textbook solution

See solution

Answer 3

Question

Formula Formula Bond dissociation energy (BDE) is the energy required to break a bond, making it an endothermic process. BDE is calculated for a particular bond and therefore consists of fragments such as radicals since it undergoes homolytic bond cleavage. For the homolysis of a X-Y molecule, the energy of bond dissociation is calculated as the difference in the total enthalpy of formation for the reactants and products. X-Y → X + Y BDE = Δ H f X + Δ H f Y – Δ H f X-Y where, ΔHf is the heat of formation.

Chapter 5.5, Problem 5.13YT

Interpretation Introduction

Interpretation:

The heat of combustion of acetylene has to be calculated and the answer should be reported in kilojoules per mole (kJ/mol) and in kilojoules per gram (kJ/g).

Concept Introduction:

Heat of combustion: It is also known as potential heat of fuel. Heat of combustion of carbon depends on its allotropic form.

A fuel is a substance which releases energy in the form of heat while undergoing combustion. Hydrocarbons which have high heats of combustion make it a best fuel.

Combustion reaction: It is the reaction in which hydrocarbons are heated in presence of oxygen results to give water and carbon dioxide with heat.

Bond dissociation enthalpy:

Bond energy or more correctly the bond dissociation enthalpy is the enthalpy change when breaking a bond in a molecule with the reactant and products in the gas phase.

ΔrH0 = Σ ΔH (bonds broken) −Σ ΔH (bonds formed)

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Answer 4

Question

Formula Formula Bond dissociation energy (BDE) is the energy required to break a bond, making it an endothermic process. BDE is calculated for a particular bond and therefore consists of fragments such as radicals since it undergoes homolytic bond cleavage. For the homolysis of a X-Y molecule, the energy of bond dissociation is calculated as the difference in the total enthalpy of formation for the reactants and products. X-Y → X + Y BDE = Δ H f X + Δ H f Y – Δ H f X-Y where, ΔHf is the heat of formation.

Chapter 5.5, Problem 5.13YT

Interpretation Introduction