12A- Kinetic 1

Define kinetics

The area of chemistry concerned with reaction rates

[X]

Indicates concentration in moles solute/liter solution at equilibrium

(X)

Indicates concentration in moles solute/liter solution when not at equilibrium

List four factor factors that affect the rate at which a chemical reaction occur occurs

Nature of reactants, concentration of reactant, temperature, presence of a catalyst

Zero order rate expression for substance (X)

k(X)^0=k

First order rate expression for substance (X)

k(X)

Second order rate expression for substance (X)

k(X)²

Third order rate expression for substance (X)

k(X)³

Zero order

concentration and rate remains the same

First order

As concentration doubles rate doubles

-as concentration triples rate triples ( directly proportional)

Second order

As con concentration doubles rate increases x4

-as con concentration triples rate increases x9

Third order

As concentration doubles rate increase increases x8

Rate law

rate =k(x)

Intergrated rate law

In(x) =-kt+In(x)o OR In(x)o/(x)=kt