(a)
Interpretation: Each reaction is to be labeled as endothermic or exothermic.
Concept introduction: The
(b)
Interpretation: The faster reaction is to be identified.
Concept introduction: The activation energy
(c)
Interpretation: The reaction which generates the product lower in energy is to be identified.
Concept introduction: The activation energy
(d)
Interpretation: The point in energy level diagrams which corresponds to the transition state is to be identified.
Concept introduction: The transition state is formed during the conversion of reactants into products in the chemical reaction. In an energy level diagram, it corresponds to the high potential energy along the y-axis.
(e)
Interpretation: The activation energy id to be labeled for each reaction.
Concept introduction: The activation energy
(f)
Interpretation: The change in enthalpy
Concept introduction: The chemical reaction in which energy is released during the formation of products is known as exothermic reactions. The energy released during the reaction is denoted by
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Chapter 6 Solutions
ORGANIC CHEMISTRY-STUDY GDE...-W/ACCESS
- Hydrogen chloride gas dissolves in water to form hydrochloric acid (an ionic solution). HCl(g)H2OH+(aq)+Cl(aq) Find H for the above reaction. The data are given in Table 6.2.arrow_forwardIn the reaction: CH4 + 2 O2 → CO2 + 2 H2O The experimental ?H is -213 kcal/mol. How much heat is released during the combustion of 0.35 molof methane (CH4)?arrow_forwardConsider these reactions: Reaction 1: H2(�)+Cl2(�)⟶2HCl(�)Δ�=−184.6 kJ Reaction 2: 2OF2(�)⟶O2(�)+2 F2(�)Δ�=−49.4 kJ Reaction 3: N2(�)+2O2(�)⟶2NO2(�)Δ�=+66.4 kJ Use Reaction 2. How much energy (in kJ) is released when 78.0 g of oxygen difluoride decomposes?arrow_forward
- In the reaction: CH4 + 2 O2 → CO2 + 2 H2O The experimental ?H is -213 kcal/mol. How much heat is released during the combustion of 45.3 grams of methane (CH4) (you will need to calculate molar mass)?arrow_forwardDo each of the following statements describe an endothermic or exothermic reaction? a. ΔH is a positive value. b. The energy of the products is lower than the energy of the reactants. c. Energy is released in the reaction. d. The bonds in the reactants are stronger than the bonds in the products.arrow_forwardConsider the reaction below and classify as a(n) ________. CH4(g) + 2O2(g) → CO2(g) + 2H2O(l) + 213 kcal a. exothermic reaction b. decomposition reaction c. catalyzed reaction d. endothermic reaction e. oxidation-reduction reactionarrow_forward
- 1.) In an exothermic reaction: A. The surroundings absorb heat from the reaction mixture. B. The surroundings release heat to the reaction mixture. C. Both the reaction mixture and the surroundings release heat. D. None of the above. 2.) In an endothermic reaction: A. The energy of the reactants is higher than the energy of the products. B. The products are more stable than the reactants. C. The energy of the reactants is lower than the energy of the products. D. None of the above.arrow_forward1. Use standard enthalpies of formation from the equation sheets or the back of your book to calculate H°rxn for this reaction. Then draw a Reaction Energy diagram for the reaction using "Reaction Progress" on the x-axis and "Potential Energy" on the y-axis. Label H°rxn, reactants and products on each diagram. 2 H2S(g) + 3 O2(g) 2 H2O(g) + 2 SO2(g) please help me to answer this questionarrow_forwardC2H5OH + 3O2 → 2CO2 + 3H2O ΔH⁰ = - 791.4kJ/mol How much heat will be released when 10.0g of ethanol reacts with excess oxygen? [ Select ] ["-7914 kJ", "- 171.7 kJ", "-0.013 kJ", "171.7 kJ"] Is the reaction endothermic or exothermic? [ Select ] ["endothermic", "exothermic"]arrow_forward
- Calculate the ?H (in kcal/mol) for the reactions (use table above): a) H2 + O2 → 2 H2O b) CH4 + 2 O2 → CO2 + 2 H2O c) 6 CO2 + 6 H2O → C6H16O6 + 6 O2 What is an exothermic reaction? What is an endothermic reaction? List whether the reactions in problem 1 are endothermic or exothermic. ONLY THIS QUESTION ^arrow_forwardA = 2 B Δ H = + 24 kcal Is the above reaction exothermic or endothermic? Is heat a reactant or a product in the reaction above?arrow_forwardIn order to break water into hydrogen and oxygen, water is heated to more than 500°C. Which kind of reaction is this and why? It is exothermic because heat needs to be released by the reactants to form the products. It is endothermic because heat needs to be released by the reactants to form the products It is exothermic because heat needs to be absorbed by the reactants to form the products. It is endothermic because heat needs to be absorbed by the reactants to form the products.arrow_forward
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