19 A catalyst increases the rate of a chemical reaction by (1)(1)providing an alternate reaction pathway(2)providing the required heat of reaction(3) increasing the potential energy of the products(4) increasing the activation energy of the reaction 相关知识点: 试题来源: 解析 (1) 反馈...
(A) If a catalyst increases the forward rate of a reaction by a factor of two, it must increase the rate of the reverse reaction by a factor of two.(B) If a catalyst increases the rate of formation of a product by a factor of two, it must increase the rate of formation of the ...
apeople come from 正在翻译,请等待...[translate] aMenneking 开始[translate] aa catalyst is a substance that increases the rate of a chemical reaction without itself being used up 催化剂是增加一个化学反应的率,不用用完的本身的物质[translate]...
1.ChemistryA substance, usually used in small amounts relative to the reactants, that modifies and increases the rate of a reaction without being consumed in the process. 2.One that precipitates a process or event, especially without being involved in or changed by the consequences:"A free ...
Step-by-Step Solution:1. Definition of Catalyst: A catalyst is a substance that increases the rate of a chemical reaction without itself undergoing any permanent chemical change. It facilitates the reaction
Catalyst, in chemistry, any substance that increases the rate of a reaction without itself being consumed. Enzymes are naturally occurring catalysts responsible for many essential biochemical reactions. In general, catalytic action is a chemical reaction
(Chemistry) A substance, usually used in small amounts relative to the reactants, that modifies and increases the rate of a reaction without being consumed in the process. Cause The producer of an effect, result, or consequence. Catalyst One that precipitates a process or event, especially wi...
A catalyst is by definition a substance that increases the rate of approach to equilibrium of a chemical reaction in the reaction. A. without being substantially consumed B. not at all comsumed C. with decreasing significantly D. with the change of it ’ s composition ...
the assistance of a catalyst, namely a special class of chemical that increases the rate of a reaction or pushes it over an energetic hurdle, the standard catalysts used are metal-based, which are difficult or expensive to remove from the final material, and do not degrade in the environment...
And the rate of catalyst deactivation is considered to be the sum of the two steps. In general, the carbon-nuclei formation has higher activation energy (316.8 kJ/mol) than the carbon-crystallite growth (227.1 kJ/mol) during the CMD reaction [16,61], and thus the latter usually has ...