Kinetics and Rate

Question 1

What happens to Delta G at equillibrium ?

Answer 1

Delta g = 0 at chemical equilibrium

Question 2

What happens to concentrations of reactants and products at equilibrium ?

Answer 2

At chemical equilibrium, the concentration of reactants and produce are static

Question 3

What are the properties of first order reactions (kinetics) ?

Answer 3

First order reaction rates (rate = k[reactant])
depend on concentration
and half-lives are constant (independent of concentration)
The rate constant in a first order reaction will have a unit of s–1 to make the units of the rate M/s,

Question 4

What are properties for zeroth order reactions ?

Answer 4

A pair of rates are the SAME for different trials

Question 5

How do you determine the order of rate law for kinetic reactions ?

Answer 5

The order (exponents) of the rate law equals the number of reactant molecules that collide (react)

Question 6

What is the sign of Delta H in an exothermic reaction ? How does this effect relationship between bonds broken and bonds formed

Answer 6

Delta H is negative
-When Delta H is negative, the bond energy for of the bonds formed must be Greater than the bond energy of the bonds broken

Question 7

What is a radical ?

Answer 7

A radical is a molecule with an unpaired electron, i.e., a molecule with an odd number of electrons.

Question 8

For chemical reactions, what is written as part of rate law?

Answer 8

The reactants are included in rate law
K [reactant]

Question 9

why does oxygen have a higher bond dissociation energy than Flourine?

Answer 9

b/c Oxygen has 2 covalent bonds while Flourine has 1 covalent bond

Question 10

What is the oxidation rate for all pure elements (single atom ) ?

Answer 10

All pure elements have oxidation rate of 0