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The rate-determining step is a chemistry term for the slowest step in a chemical reaction. The rate-determining step is often compared to the neck of a funnel; the rate at which water flows through the funnel is determined by the width of the neck, not by the speed at which water is poured in. Similarly, the rate of reaction depends on the rate of the slowest step. Chemistry (derived from the Arabic word kimia, alchemy, where al is Arabic for the) is the science that deals with the properties of organic and inorganic substances and their interactions with other organic and inorganic substances. ...
A chemical reaction is a process that results in the interconversion of chemical substances [1]. The substance or substances initially involved in a chemical reaction are called reactants. ...
The reaction rate of a chemical reaction is the speed of production of products from reactants. ...
For example, the reaction NO2(g) + CO(g) → NO(g) + CO2(g) can be thought of as occurring in two elementary steps:
1. NO2 + NO2 → NO + NO3 (slow step)
2. NO3 + CO → NO2 + CO2 (fast step)
As the second step consumes the NO3 produced in the slow first step, it is limited by the rate of the first step. For this reason, the rate-determining step is reflected in the rate equation of a reaction. A rate equation is a mathematical expression used in chemistry to link the rate of a reaction to each reactant and their various orders. ...
The concept of the rate-determining step is very important to the optimization and understanding of many chemical processes such as catalysis and combustion. Generic graph showing the effect of a catalyst in an hypotetical exothermic chemical reaction. ...
Combustion or burning is a chemical process, an exothermic reaction between a substance (the fuel) and a gas (the oxidizer), usually O2, to release heat. ...
In a reaction-coordinate, the transition state with the highest energy is the rate-determining step of the reaction. The transition state of a chemical reaction is a particular configuration along the reaction coordinate. ...
Reference: Zumdahl, Steven S. Chemical Principles. 5th Ed. Boston, Houghton Mifflin Company: 2005, pp 727-728.
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