The Properties of Chemical Reactions

Question 1

Types of Chemical Reactions

Answer 1

First Order - reactions with a single reactant

Second Order - reactions with two reactants that “react” with each other

Question 2

Reaction Rates

Answer 2

• The rate of all chemical reactions depends on the reactant concentrations
• Reaction rate, or velocity, is defined as the amount of product produced per unit time in mols or mols/liter
• The reaction velocity can be determined by multiplying the molar concentration of reactant(s) by the “rate constant” for that reaction
• The rate constant is designated with a lower case k, and is a physical constant for that reaction that describes how rapidly it will proceed

Question 3

Reaction Rate Equations

Answer 3

Reaction Velocity

First Order: [B]/t = k₁[A]

Second Order: [B]/t = k₂[A₁][A₂]