2.1 Flashcards
Initial rate of reaction
The change in concentration of a reactant or product per unit time at the start of the reaction when t=0
Order with respect to reactant
The power which the concentration of the reactant is raised in the equation
Rate constant,K
The constant that links the rate of reaction with the concentrations of the reactants raised to the powers of their orders in the rate equation.
Half-life
The time taken for the concentration of the reactant to reduce by half
The rate-determining step
The slowest step in the reaction mechanism of a multi-step reaction
An intermediate
A species formed in one step of a multi-step reaction that is used up in a subsequent step, and is not seen as either a reactant or a product of the overall equation.
Rate of reaction
The change in concentration of a reactant or a product per unit time.
A dynamic equilibrium
Happens in a closed system when the rate of the forward reaction is equal to the rate of the reverse reaction.
A homologous equilibrium
An equilibrium in which all the species making up the reactants and products are in the same physical state
A heterogenous equilibrium
An equilibrium where the species making up the reactants and products are in different physical states
A Brønsted-Lowry base
Is a proton, H+, acceptor
A Brønsted-Lowry acid
Is a proton,H+, donor
An alkali
A base that dissolve in water forming OH- ions
Neutralisation
A chemical reaction where an acid and base react together to produce a salt and water
An acid-base pair
A pair of two species that transform into each other by gain or loss of a proton
