(a)
Interpretation:
Whether the reaction with activation energy 0.10 kcal or 1 kcal corresponds to a faster reaction needs to be explained.
Concept introduction:
Activation energy of a reaction in chemistry is the amount of energy that must be provided to start a
(b)
Interpretation:
Whether the reaction with equilibrium constant 10 or 0.001 corresponds to a faster reaction needs to be determined.
Concept introduction:
Equilibrium constant is related to a relationship between reactants and products of a specific reaction. It is a measurement for determine the completion of a reaction with equilibrium.
(c)
Interpretation:
Whether the reaction with change in enthalpy -25 kcal/mol or +2 kcal/mol corresponds to a faster reaction needs to be determined.
Concept introduction:
Enthalpy of a reaction is the energy change occurs in the system, during the particular reaction. Enthalpy of a reaction is measured as kilojoules per mole (kJ mol-1) or kilocalories per mole (kcal mol-1).
Want to see the full answer?
Check out a sample textbook solutionChapter 6 Solutions
General, Organic, & Biological Chemistry
- 4-77 To convert 1 mol of iron(III) oxide to its elements requires 196.5 kcal: How many grams of iron can be produced if 156.0 kcal of heat is absorbed by a large-enough sample of iron(III) oxide?arrow_forwardEthanol, C2H5OH, is a gasoline additive that can be produced by fermentation of glucose. C6H12O62C2H5OH+2CO2 (a) Calculate the mass (g) of ethanol produced by the fermentation of 1.000 lb glucose. (b) Gasohol is a mixture of 10.00 mL ethanol per 90.00 mL gasoline. Calculate the mass (in g) of glucose required to produce the ethanol in 1.00 gal gasohol. Density of ethanol = 0.785 g/mL. (c) By 2022, the U. S. Energy Independence and Security Act calls for annual production of 3.6 1010 gal of ethanol, no more than 40% of it produced by fermentation of corn. Fermentation of 1 ton (2.2 103 lb) of corn yields approximately 106 gal of ethanol. The average corn yield in the United States is about 2.1 105 lb per 1.0 105 m2. Calculate the acreage (in m2) required to raise corn solely for ethanol production in 2022 in the United States.arrow_forwardThe carbon dioxide exhaled in the breath of astronauts is often removed from the spacecraft by reaction with lithium hydroxide 2LiOH(s)+CO2(g)Li2CO3(s)+H2O(l) Estimate the grams of lithium hydroxide required per astronaut per day. Assume that each astronaut requires 2.50 103 kcal of energy per day. Further assume that this energy can be equated to the heat of combustion of a quantity of glucose, C6H12O6, to CO2(g) and H2O(l). From the amount of glucose required to give 2.50 103 kcal of heat, calculate the amount of CO2 produced and hence the amount of LiOH required. The H for glucose(s) is 1273 kJ/mol.arrow_forward
- What mass of solid NaOH (97.0% NaOH by mass) is required to prepare 1.00 L of a 10.0% solution of NaOH by mass? The density of the 10.0% solution is 1.109 g/mL.arrow_forwardlist at least three quantities that must be conserved in chemical reactions.arrow_forward. A(n) _______ speeds up a reaction without being consumed.arrow_forward
- You are given mixtures containing the following compounds. Which compound in each pair could be separated by stirring the solid mixture with water? (a) NaOH and Ca(OH)2 (b) MgC12 and MgF2 (c) AgI and KI (d) NH4Cl and PbCl2arrow_forward94. Baking soda (sodium hydrogen carbonate. NaHCO3) is often used to neutralize spills of acids on the benchtop in the laboratory. What mass of NaHCO3 would be needed to neutralize a spill consisting of 25.2 mL of 6.01 M hydrochloric acid solution?arrow_forward4.13 For the following reactions, determine the value of x. 4C+S84CS2 mol S8 yields x mol CS2 CS2+3O2CO2+2SO2 mol CS2 yields x mol SO2 N2H4+3O22NO2+2H2O mol O2 yields x mol NO2 SiH4+2O2SiO2+2H2O 1.3103 mol SiH4 yields x mol H2Oarrow_forward
- 4.6 Use the web to research prices of gasoline at the pump for consumers in your area during the past year. Also find information about the price of crude oil for the same period. Discuss any correlations you observe between the two prices.arrow_forward4-55 For the reaction: (a) How many moles of N2 are required to react completely with 1 mole of O2? (b) How many moles of N2O3 are produced from the complete reaction of 1 mole of O2? (c) How many moles of O2 are required to produce 8 moles of N2O3?arrow_forward4.60 Why are fuel additives used?arrow_forward
- Chemistry & Chemical ReactivityChemistryISBN:9781337399074Author:John C. Kotz, Paul M. Treichel, John Townsend, David TreichelPublisher:Cengage LearningChemistry & Chemical ReactivityChemistryISBN:9781133949640Author:John C. Kotz, Paul M. Treichel, John Townsend, David TreichelPublisher:Cengage LearningChemistry: The Molecular ScienceChemistryISBN:9781285199047Author:John W. Moore, Conrad L. StanitskiPublisher:Cengage Learning
- Chemistry: Matter and ChangeChemistryISBN:9780078746376Author:Dinah Zike, Laurel Dingrando, Nicholas Hainen, Cheryl WistromPublisher:Glencoe/McGraw-Hill School Pub CoIntroductory Chemistry: A FoundationChemistryISBN:9781337399425Author:Steven S. Zumdahl, Donald J. DeCostePublisher:Cengage LearningChemistry for Engineering StudentsChemistryISBN:9781337398909Author:Lawrence S. Brown, Tom HolmePublisher:Cengage Learning