At room temperature of 25.0°C milk sours in about 30.0 hrs. In the refrigerator at 4.00°C, it can be stored 4 times as long before it sours. The energy of activation for the reaction responsible for the souring of milk is _________kJ/mol 4.50 x 104 kJ/mol 5.29 x 104 kJ/mol 3.73 x 104 kJ/mol 4.03 x 104 kJ/mol

At room temperature of 25.0°C milk sours in about 30.0 hrs. In the refrigerator at 4.00°C, it can be stored 4 times as long before it sours. The energy of activation for the reaction responsible for the souring of milk is _________kJ/mol 4.50 x 104 kJ/mol 5.29 x 104 kJ/mol 3.73 x 104 kJ/mol 4.03 x 104 kJ/mol

Chemistry

9th Edition

ISBN:9781133611097

Author:Steven S. Zumdahl

Publisher:Steven S. Zumdahl

Chapter12: Chemical Kinetics

Section: Chapter Questions

Problem 76AE: One of the concerns about the use of Freons is that they will migrate to the upper atmosphere, where...

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The direct reaction of iron(III) oxide. Fe2O3, to give iron and oxygen gas is a nonspontaneous reaction; normally, iron combines with oxygen to give rust (the oxide). Yet we do change iron(III) oxide, as iron ore, into iron metal. How is this possible? Explain.
In Chapter 3, we discussed the conversion of biomass into biofuels. One important area of research associated with biofuels is the identification and development of suitable catalysts to increase the rate at which fuels can be produced. Do a web search to find an article describing biofuel catalysts. Then, write one or two sentences describing the reactions being catalyzed, and identify the catalyst as homogeneous or heterogeneous.
For the endothermic reaction AB(g)A(g)+B(g), the following represents a reaction container at two different temperatures. Which one (I or II) is at the lower temperature?
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One of the concerns about the use of Freons is that they will migrate to the upper atmosphere, where chlorine atoms can be generated by the following reaction: CCl2F2(g)Freon-12hvCF2Cl(g)+Cl(g) Chlorine atoms can act as a catalyst for the destruction of ozone. The activation energy for the reaction Cl(g) + O3(g) ClO(g) + O2(g) Is 2.1 kJ/mol. Which is the more effective catalyst for the destruction of ozone, Cl or NO? (See Exercise 75.)
. What does the activation energy for a reaction represent? How is the activation energy related to whether a collision between molecules is successful?
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