Domanda del libro di testo
Acetylene (H–C≡C–H) is the fuel used in welding torches.
b. Estimate ∆H for this reaction (in kJ/mol) using the bond energies listed in Table 7.1.
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Ch.7 Chemical Reactions: Energy, Rate and Equilibrium
McMurry8th EditionFundamentals of General, Organic, and Biological ChemistryISBN: 9780134015187
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TOC.tableOfContents
- Ch.1 Matter and Measurements27
- Ch.2 Atoms and the Periodic Table20
- Ch.3 Ionic Compounds8
- Ch.4 Molecular Compounds23
- Ch.5 Classification & Balancing of Chemical Reactions12
- Ch.6 Chemical Reactions: Mole and Mass Relationships28
- Ch.7 Chemical Reactions: Energy, Rate and Equilibrium64
- Ch.8 Gases, Liquids and Solids24
- Ch.9 Solutions52
- Ch.10 Acids and Bases25
- Ch.11 Nuclear Chemistry22
- Ch.12 Introduction to Organic Chemistry: Alkanes57
- Ch.13 Alkenes, Alkynes, and Aromatic Compounds47
- Ch.14 Some Compounds with Oxygen, Sulfur, or a Halogen50
- Ch.15 Aldehydes and Ketones45
- Ch.16 Amines42
- Ch.17 Carboxylic Acids and Their Derivatives57
- Ch.18 Amino Acids and Proteins82
- Ch.19 Enzymes and Vitamins63
- Ch.20 Carbohydrates44
- Ch.21 The Generation of Biochemical Energy65
- Ch.22 Carbohydrate Metabolism45
- Ch.23 Lipids42
- Ch.24 Lipid Metabolism33
- Ch.25 Protein and Amino Acid Metabolism24
- Ch.26 Nucleic Acids and Protein Synthesis45
McMurry8th EditionFundamentals of General, Organic, and Biological ChemistryISBN: 9780134015187Non è quello che usi tu?Cambia libro di testo
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McMurry 8th EditionCh.7 Chemical Reactions: Energy, Rate and EquilibriumProblema 29a
McMurry 8th EditionCh.7 Chemical Reactions: Energy, Rate and EquilibriumProblema 29aCapitolo 7, Problema 29a
Glucose, also known as "blood sugar" when measured in blood, has the formula C6H12O6.
a. Write the equation for the combustion of glucose with O2 to give CO2 and H2O.
Guida verificata passo dopo passo1
Write the general form of a combustion reaction: A hydrocarbon or carbohydrate reacts with oxygen (O₂) to produce carbon dioxide (CO₂) and water (H₂O).
Write the unbalanced chemical equation for the combustion of glucose: .
Balance the carbon (C) atoms: Glucose has 6 carbon atoms, so place a coefficient of 6 in front of CO₂. The equation becomes: .
Balance the hydrogen (H) atoms: Glucose has 12 hydrogen atoms, so place a coefficient of 6 in front of H₂O. The equation becomes: .
Balance the oxygen (O) atoms: Count the total oxygen atoms on the product side (6CO₂ has 12 O atoms, and 6H₂O has 6 O atoms, for a total of 18 O atoms). Glucose contributes 6 O atoms, so you need 12 more O atoms from O₂. Place a coefficient of 6 in front of O₂. The balanced equation is: .
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Combustion Reaction
A combustion reaction is a chemical process in which a substance reacts rapidly with oxygen, producing heat and light. In the case of glucose, the combustion involves its reaction with oxygen to produce carbon dioxide and water, releasing energy. This type of reaction is fundamental in both biological processes, like cellular respiration, and in energy production.
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2:25
Common Types of Alkane Reactions Concept 1
Chemical Equation
A chemical equation is a symbolic representation of a chemical reaction, showing the reactants and products along with their respective quantities. For the combustion of glucose, the equation illustrates how glucose (C6H12O6) and oxygen (O2) transform into carbon dioxide (CO2) and water (H2O). Balancing the equation is crucial to adhere to the law of conservation of mass.
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01:32Balancing Chemical Equations (Simplified) Concept 1
Stoichiometry
Stoichiometry is the branch of chemistry that deals with the quantitative relationships between the substances involved in a chemical reaction. It allows chemists to calculate the amounts of reactants needed and products formed. In the context of glucose combustion, stoichiometry helps in determining the correct coefficients for balancing the equation, ensuring that the number of atoms for each element is conserved.
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01:16Stoichiometry
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Glucose, also known as "blood sugar" when measured in blood, has the formula C6H12O6.
c. What is the minimum amount of energy (in kJ) a plant must absorb to produce 15.0 g of glucose?
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