Rate of Reaction Flashcards
Define order of a reaction
The power to which the concentration of the reactant is raised in the rate equation
Define rate of reaction
The change in concentration of a reactant or product per unit time
Define rate constant
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
Define half-life
The time taken for the concentration of a reactant to reduce by half
Define rate-determining step
The slowest step in the reaction mechanism of a multi-step reaction
How could the rate of reaction be found from a concentration-time graph?
The gradient of the tangent to the curve at time t
The half life of a first-order reaction is independent of the…
Concentration
What does the rate-concentration of a zero order reaction look like?
A horizontal line
What does the the rate-concentration graph of a first order reaction look like?
A straight line starting at the origin (y=x)
What does the rate-concentration graph of a second order reaction look like?
A parabola starting at the origin (y=x^2)
What effect does an increase in temperature have on the rate constant?
An increase in temperature means in increase in rate of reaction, so an increase in k
