(a)
Interpretation:
Whether the reaction is exothermic or endothermic when ΔH, i.e., change of enthalpy is positive needs to be explained.
Concept Introduction:
The change in enthalpy is defined as the difference in energy needed to break new bonds and the formation of new bonds. The pressure is considered constant in the process. These reactions can be endothermic or exothermic. In endothermic reaction, energy is required to form the products and in exothermic reaction, energy is released in the formation of products.
(b)
Interpretation:
Whether the reaction is exothermic or endothermic when the energy of the products is lower than the energy of reactants needs to be determined.
Concept Introduction:
In an endothermic reaction, energy is required whereas in exothermic reactions, energy is released.
(c)
Interpretation:
Whether the reaction is exothermic or endothermic when the energy is released in the reaction needs to be determined.
Concept Introduction:
In an endothermic reaction, energy is required whereas in exothermic reactions, energy is released.
(d)
Interpretation:
Whether the reaction is exothermic or endothermic if the bonds in reactants are stronger than the bonds in products needs to be determined.
Concept Introduction:
The change in enthalpy is defined as the difference in energy needed to break new bonds and the formation of new bonds. The pressure is considered constant in the process. These reactions can be endothermic or exothermic. In endothermic reaction, energy is required to form the products and in exothermic reaction, energy is released in the formation of products.
Want to see the full answer?
Check out a sample textbook solutionChapter 6 Solutions
General, Organic, and Biological Chemistry - 4th edition
- The table shows the tensile stress-strain values obtained for various hypothetical metals. Based on this, indicate which is the most brittle and which is the most tough (or most resistant). Breaking strength Elastic modulus Material Yield strength Tensile strength Breaking strain A (MPa) 415 (MPa) (MPa) (GPa) 550 0.15 500 310 B 700 850 0.15 720 300 C Non-effluence fracture 650 350arrow_forwardPlease correct answer and don't used hand raitingarrow_forwardMaterials. The following terms are synonyms: tension, effort and stress.arrow_forward
- Please correct answer and don't used hand raitingarrow_forwardPlease correct answer and don't used hand raitingarrow_forwardThe table shows the tensile stress-strain values obtained for various hypothetical metals. Based on this, indicate which material will be the most ductile and which the most brittle. Material Yield strength Tensile strength Breaking strain Breaking strength Elastic modulus (MPa) (MPa) (MPa) (GPa) A 310 340 0.23 265 210 B 100 120 0.40 105 150 с 415 550 0.15 500 310 D 700 850 0.14 720 210 E - Non-effluence fracture 650 350arrow_forward
- Please correct answer and don't used hand raiting and don't used Ai solutionarrow_forwardPlease correct answer and don't used hand raitingarrow_forwardConsider the following Figure 2 and two atoms that are initially an infinite distance apart, x =00, at which point the potential energy of the system is U = 0. If they are brought together to x = x, the potential energy is related to the total force P by dU dx = P Given this, qualitatively sketch the variation of U with x. What happens at x=x? What is the significance of x = x, in terms of the potential energy? 0 P, Force 19 Attraction Total Repulsion x, Distance Figure 2. Variation with distance of the attractive, repulsive, and total forces between atoms. The slope dP/dx at the equilibrium spacing xe is proportional to the elastic modulus E; the stress σb, corresponding to the peak in total force, is the theoretical cohesive strength.arrow_forward
- General, Organic, and Biological ChemistryChemistryISBN:9781285853918Author:H. Stephen StokerPublisher:Cengage LearningChemistry for Today: General, Organic, and Bioche...ChemistryISBN:9781305960060Author:Spencer L. Seager, Michael R. Slabaugh, Maren S. HansenPublisher:Cengage Learning
- Chemistry: Matter and ChangeChemistryISBN:9780078746376Author:Dinah Zike, Laurel Dingrando, Nicholas Hainen, Cheryl WistromPublisher:Glencoe/McGraw-Hill School Pub CoGeneral Chemistry - Standalone book (MindTap Cour...ChemistryISBN:9781305580343Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; DarrellPublisher:Cengage LearningWorld of ChemistryChemistryISBN:9780618562763Author:Steven S. ZumdahlPublisher:Houghton Mifflin College Div