36:5614.3 Reaction Mechanisms, Catalysts, and Reaction Coordinate Diagrams | General ChemistryChad's Prep373views
11:32Potential Energy Diagrams - Chemistry - Catalyst, Endothermic & Exothermic ReactionsThe Organic Chemistry Tutor632views
Multiple ChoiceWhich of the following statements is true regarding the energy diagram provided? i. The reaction is endothermic.ii. Activation energy would be less than + 10 kJ after a catalyst is added.iii. The reaction absorbs energy.iv. Activation energy would be greater than + 10 kJ after a catalyst is added.1097views9rank
Textbook QuestionIn the following three instances, which choice is greener in a chemical process? Explain. (a) A reaction that can be run at 350 K for 12 h without a catalyst or one that can be run at 300 K for 1 h with a reusable catalyst.378views
Textbook Question(c) Do catalysts affect the overall enthalpy change for a reaction, the activation energy, or both?572views
Textbook Question(a) Most commercial heterogeneous catalysts are extremely finely divided solid materials. Why is particle size important?522views
Textbook QuestionMany heterogeneous catalysts are deposited on high-surfacearea supports. Why?623views1rank
Textbook QuestionSuppose that the reaction A¡products is exothermic and has an activation barrier of 75 kJ>mol. Sketch an energy diagram showing the energy of the reaction as a function of the progress of the reaction. Draw a second energy curve showing the effect of a catalyst.932views
Textbook QuestionOne of the many remarkable enzymes in the human body is carbonic anhydrase, which catalyzes the interconversion of carbon dioxide and water with bicarbonate ion and protons. If it were not for this enzyme, the body could not rid itself rapidly enough of the CO2 accumulated by cell metabolism. The enzyme catalyzes the dehydration (release to air) of up to 107 CO2 molecules per second. Which components of this description correspond to the terms enzyme, substrate, and turnover number?918views
Textbook QuestionComment on the following statement: 'A catalyst increases the rate of a reaction, but it is not consumed because it does not participate in the reaction.'325views
Textbook QuestionWhy doesn't a catalyst appear in the overall chemical equation for a reaction?802views
Open QuestionHow are the following aspects of a reaction affected by the addition of a catalyst?316views
Open QuestionA substance that influences the reaction but does not participate in the reaction is a194views
Open QuestionEnzymes are catalysts because they lower the ______________ of a chemical reaction.163views1rank
Open QuestionA(n) ___ is a substance that speeds up a chemical reaction without being used up in the reaction.153views
Open QuestionA ___ is a substance that speeds up a chemical reaction without being used up in the reaction.140views
Open QuestionWhat are the roles of hydrogen peroxide oxygen hydrogen and catalase in the following reaction?134views
Open QuestionA substance that accelerates any chemical reaction but is not consumed in the reaction is a _____.143views