Which picture corresponds to which type of reaction?AВRRPCDRRexothermic and "concentrating" (fewer states available)Aendothermic and "concentrating" (fewer states available)Dexothermic and "spreading" (more states available)Вendothermic and "spreading" (more states available) Select the reaction(s) that illustrate a favorable positive entropy of reaction.AВRRRRCAВD

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Which picture corresponds to which type of reaction? A R R R R exothermic and "concentrating" (fewer states available) endothermic and "concentrating" (fewer states available) exothermic and "spreading" (more states available) endothermic and "spreading" (more states available)

Which picture corresponds to which type of reaction? A R R R R exothermic and "concentrating" (fewer states available) endothermic and "concentrating" (fewer states available) exothermic and "spreading" (more states available) endothermic and "spreading" (more states available)

Introductory Chemistry For Today

8th Edition

ISBN:9781285644561

Author:Seager

Publisher:Seager

Chapter5: Chemical Reactions

Section: Chapter Questions

Problem 5.34E

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Question

Which picture corresponds to which type of reaction?
A
В
R
R
P
C
D
R
R
exothermic and "concentrating" (fewer states available)
A
endothermic and "concentrating" (fewer states available)
D
exothermic and "spreading" (more states available)
В
endothermic and "spreading" (more states available)

Select the reaction(s) that illustrate a favorable positive entropy of reaction.
A
В
R
R
R
R
C
A
В
D

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Ethanol, 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.
Insoluble AgCl(s) precipitates when solutions of AgNO3(aq) and NaCl(aq) are mixed. AgNO3(aq) + NaCl(aq) AgCl(s) + NaNO3(aq) rH = ? To measure the energy evolved in this reaction, 250. mL of 0.16 M AgNO3(aq) and 125 mL of 0.32 M NaCl(aq) are mixed in a coffee-cup calorimeter. The temperature of the mixture rises from 21.15 C to 22.90 C. Calculate the enthalpy change for the precipitation of AgCl(s), in kJ/mol. (Assume the density of the solution is 1.0 g/mL and its specific heat capacity is 4.2 J/g K.)
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