chapter 18 Flashcards
rates equation
quantity reacted or produced/time
rates equation
change in concentration/change in time
rate of reaction units
mol dm^-3s^-1
short-hand for concentration
square brackets i.e. [A]
what is rate proportional to?
rate ∝ [A]^n
with n representing the order of the reaction
what are the three types of order
0, 1st and 2nd order
what does zero-order mean?
the concentration of the substance has no influence on the rate
what does first-order mean?
if the concentration of A is doubled, the rate of reaction is increased by 2^1
what does second-order mean?
if the concentration of A increased by a factor of 2, the rate of reaction is increased by a factor of 2^2.
what is the rate equation in terms of order?
rate of reaction=K(constant) x [A]^m x [B]^n
how do you calculate overall order?
and the powers of the substances together
units of K
vary depending on the equation so make sure to check when answering questions
