All Flashcards
What is the difference between first order and second order reactions (effect of doubling concentration)?
First Order: Doubling concentration doubles the rate. Second Order: Doubling concentration quadruples the rate.
What is the definition of a rate law?
A mathematical expression showing how the rate of a chemical reaction depends on the concentration of reactants.
What is the definition of reaction rate?
How fast reactants turn into products.
What is the definition of a rate constant?
A proportionality constant (k) specific to the reaction at a given temperature.
What is the definition of the order of a reaction?
The exponent (n) to which a reactant's concentration is raised in the rate law; determined experimentally.
What is the definition of an elementary reaction?
A reaction that occurs in a single step, involving either a single molecule or a group of molecules colliding in a single event.
What is the effect of doubling the concentration of a reactant in a first-order reaction?
The reaction rate doubles.
What is the effect of doubling the concentration of a reactant in a second-order reaction?
The reaction rate quadruples.
What is the effect of increasing the temperature on the rate constant k?
The rate constant k generally increases, leading to a faster reaction rate.