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21 Cards in this Set
 Front
 Back
what is the study of matter by investigating light, sound, or particles that are emitted, absorbed, or scattered

spectroscopy


what are three ways to measure reaction rates?

spectroscopy
electrical conductance measurement pressure measurement 

how is reaction rate measured?

rate=change[A]/change(t)
[A]=molarity of A 

What is the Rate Law

aA+bB>cC+dD
Rate=k([A]^x)([B]^y) reaction is xth order in A, yth order in B, and (x+y)th order overall 

In a first order reaction what equation would we use to find the time it takes for a Molarity concentration to half for example?

ln[A]=ln[A]o kt
where [A] is final concentration [A]o is initial concentration, k is the concentration factor, and t is time 

what is the equation for half life of a first order reaction?

t(1/2)=ln(2)/k


How do you know if a reaction is first order?

if the units involved with the concentration factor have 1/s or inverse seconds.


what is the half life of a second order reaction?

t(1/2)=1/k[A]o


what is the half life of a zero order reaction?

t(1/2)=[A]o/2k


what are the rate equations for zero,first,second and third order reactions

zero:
d[A]/dt=k First: d[A]/dt=k[A] Second: d[A]/dt=k[A]^2 Third: d[A]/dt=k[A]^3 

What are the concentrationTime equations for Zero, first, and second order equations

Zero:
[A]=[A]okt First: ln[A]=ln[A]okt Second: 1/[A]=(1/[A]o)kt 

k = A*exp(Ea/R*T)
what equation is this and what does everything mean 
Arrhenius Equation
k=rate constant A=frequency factor Ea=energy of activation R=gas constant T=absolute temperature 

what does Molecularity mean?

Number of Molecules reacting in the elementary step


What is a catalyst?

a substance that increases the rate of a chemical reaction without being consumed in the reaction


What are the three types of catalysts?

Heterogeneous Catalysis
Homogeneous Catalysis Enzyme Catalysis 

How do we calculate the equilibrium constant and how do we determine the lie?

aA + bB<>cC + dD
k=([C]^c)([D]^d)/(([A]^a)([B]^b) if k is greater than 1 than lie is to the right if k is less than 1 than lie is to the left 

Out of gases,liquids, and solids what are the only things included in the equilibrium concentration factor equation?

gases!
liquids and solids are not included!!! 

how do you find change of n

moles of gas products moles gas reactants


what is Qc and what does it predict?

Qc=[products]/[reactants]
if Qc>kc proceeds from right if Qc<kc proceeds from left if Qc=kc at equilibrium carrot points to the direction it proceeds from 

what are 4 factors that affect equilibrium?

concentration
pressure volume and temperature 

For the following things say if they shift equilibrium, or change equilibrium concentration or both

shifts equil changes equil K
concentration : yes no Pressure: yes no Volume: yes no temp: yes yes catalyst: no no 