Intro chemical kinetics inorg chem lec Flashcards
Stoikhein
Element
Metron
Measure
Measure of elements
Stoichiometry
Determination of the proportions in which elements or compounds react with one another
Stoichiometry
The amounts in moles of any two substances in a chemical reaction
Mole ratio
Weight of one sample mole
Molar mass
A mole of any substance is 6.022 x10^23 molecules
Avogardo’s number
Number of atoms of each element in a molecule
Subscripts
Tells the number of molecules
Coefficients
Study of the reaction rates defined by the change in the concentrations of reactants and products with time
Chemical kinetics
Change in concentration/time taken
Reaction rate
Factors that affect Reaction Rate
1-Temperature
2-Concentration
3-Catalysts
4-Pressure
5-Surface area
6-Reactant state of matter
7-molecular orientation
The more particles collide per unit time
The more reaction between them can occur
Increase in reactants concentration
Reaction rate increases
Increase in temperature
Increase reaction rate
A substance that participates in chemical reaction and increases the reaction rate without undergoing a net chemical change itself
Catalyst
Increase in surface area
Increase in reaction rate
The higher the pressure of reactants (for gasses)
Increase in reaction rate
Expressed as the concentration of reactant consumed or the concentration of product formed per unit time
Reaction rate
Moles per liter per unit time
M/s, M/min, M/h
Reaction rate unit
Mathematical relationships between the chemical reaction and the concentration of its reactants
Rate Law
The sum of orders for each reactant
Overall reaction order
The instantantaneous rate at the start of the reaction
Initial rate of reaction
Express the reaction rate as a function of the initial concentration and a measures actual concentration of one or more reactants after a specific amount of time has passed
Used to determine the rate constant and the reaction order from experimental data
Integrated rate law
k [A]x[B]y
Rate law
Avogardo’s number
6.022 x10^23 molecules
