Given the following propositions, indicate which or which are correct: When a catalyst is added to a system: I) The enthalpy change of the reaction becomes more negative, that is, the reaction becomes more exothermic and therefore faster . II) The Gibbs standard energy variation becomes more negative and consequently its speed increases. III) The equilibrium state is not modified. IV) The mechanism of the reaction is modified and therefore its speed increases.
Given the following propositions, indicate which or which are correct: When a catalyst is added to a system: I) The enthalpy change of the reaction becomes more negative, that is, the reaction becomes more exothermic and therefore faster . II) The Gibbs standard energy variation becomes more negative and consequently its speed increases. III) The equilibrium state is not modified. IV) The mechanism of the reaction is modified and therefore its speed increases.
Principles of Modern Chemistry
8th Edition
ISBN:9781305079113
Author:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Publisher:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Chapter14: Chemical Equilibrium
Section: Chapter Questions
Problem 72P
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Given the following propositions, indicate which or which are correct: When a catalyst is added to a system: I) The enthalpy change of the reaction becomes more negative, that is, the reaction becomes more exothermic and therefore faster . II) The Gibbs standard energy variation becomes more negative and consequently its speed increases. III) The equilibrium state is not modified. IV) The mechanism of the reaction is modified and therefore its speed increases.
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