Chem Test 4th Quarter Flashcards
How to find Activation Energy
transition state-reactants
How to find Activation Energy for the reverse reaction
transition state-products
how to find delta E (^E)
products-reactants
describes a process or reaction in which the system absorbs energy from its surroundings, products are higher than reactants
endothermic process
is a chemical reaction that releases energy by light or heat, reactants are higher than products
exothermic process
the study of how fast a reaction proceeds and what happens to reactants as they turn to products
chemical kinetics
A single molecular event, such as the collision of molecules, resulting in a reaction
elementary reaction
the step by step sequence of reactions by which the overall chemical change occurs
reaction mechanism
a species that appears in some steps, but not in the equation
reaction intermediate
the reactants and products all exist in a single phase
homogeneous reaction
in order to occur, reactants molecules must collide with an energy greater than some minimum value and with the proper orientation
collision theory
the minimum energy required for two molecules to react
activation energy
unstable grouping of atoms that can break up to form products
activated complex
factors influencing the rate of a reaction
- higher temps
- increased concentration of reactants
- increased surface area
- nature of reactants
- cataylst
the equation that relates the rate of a reaction to the concentrations of reactants and catatlysts rasied to various powers
rate law
rate law equation
rate=K[A}^m[B]^n[C]^p
equation to find K
k= Rate/(conA)(conB)
rate determining step in a reaction mechanism
the slowest step
what order is a reactant with no coefficiants?
first order
the same as or an integer multiple of the empirical formula
molecular formula
the formula of a substance written with the smallest whole number ratio
empirical formula
a reaction intermediates get ____ out in an equation
canceled
How many different nonmetals bond to form a binary molecular compound?
2
If their are 2 reactants in a process, the molecularity of that rate determining step is
bimolecular
