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chapter xx and gas c

67

QuestionAnswer
chemical kinetics the area of chemistry that deals with the rate of reactions
reaction rate the change in concentration of a reactant or a product of a chemical reaction per unit time
average reaction rate the change in reactant or product concentration over a given time interval
instantaneous reaction rate the rate of a chemical reaction at a single point in time
average reaction rate the change in reactant or product concentration over a given time interval
gas reactions The rate of reaction between gases is increased by increased pressure. In effect pressure is the gas equivalent of concentration
catalyst a substance that alters the rate of reaction without itself being permanently changed
biological catalyst a catalyst made by a living system
heterogenous catalyst a catalyst in a reaction in which the reactants and catalyst are in different physical states
homogenous catalyst a catalyst in a reaction in which the reactants and the catalyst are in the same physical state
rate law the mathematical expression that allows calculation of reaction rate as a function of reaction concentration
rate law equation the relationship among rate, the rate constant, the intial concentrations of reactants, and the orders of reaction with respect to reactants.
order of reaction the exponent used to describe the relationship between the intial concentration of a particular reactant and the rate of reaction
total order of reaction the sum of the exponents in the rate law equation
intial rate the rate determined right after the reaction begins.
Enumerate ways to measure reaction rates gas volume, color, mass, PH, and electrial conductivity.
Factors that affect reaction rate chemical nature, concentration of reactants (higher pressure=faster reaction higher concentration=faster reaction, surface area (larger=faster reaction), temperature (higher=faster reaction), Prescence of a catalyst.
• Pascal: SI unit for pressure (Pa
Barometer Device used to measure atmospheric pressure
Manometer Device used for measuring the pressure of a gas in a container
Boyle’s Law Pressure and volume are inversely related or inversely proportiona
Absolute zero: Temperature of −273 °C beyond which matter cannot be cooled
Created by: Masterlearner5
 

 



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