AP Chemistry 1.4 Chemical Reaction Rates
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AP Chemistry 1.4 Chemical Reaction Rates. What are the correct units for a second order rate constant?
AP | AP Chemistry |
AP Chemistry | Chemical Reaction Rates |
Language | English Language |
Test Prep | AP Chemistry |
Transcript
is the correct units for a second order rate Constant
and your potential answers All right You know i get
asked that a lot of cocktail parties Okay well this
problems asking about the units for a rape constant but
there's a catch It doesn't give us the equation for
the rate law told so let's start by writing the
reaction rate law equation right there Rika rate law tells
us the reaction rate as a function of the rate
constant in the concentration of the reactant way don't know
what the reactant are but we do know that the
reaction is second order it's hoping to make the order
of the phoenix by the end of the year But
you don't have to put in it's time for us
Okay so the reaction order refers to the exponents on
the concentrations of the reacting species in the rate law
If we have only one reactant a then the concentration
of a must be squared in this equation Well the
question asked us to find the units on the rape
constant k Unfortunately we're given the units for the other
terms in the equation Good thing we wore our lucky
underwear today All right so here's the trick Since the
concentration of a is squared the units on a mole's
per leader are also squared After that all we have
to do to find the units on k is a
little math We have to isolate the unknown then group
the same units together and cancel out terms by term
correct units for the rate constant our leaders per mall
for second which is answer c Now how would you
rate that constant We'd give it five girl and meyer 00:01:48.966 --> [endTime] flasks