Chapter 17: Chemical Equilibrium

Question 1

Activity Series

Answer 1

Used to predict if a single replacement reaction will occur

Question 2

Equilibrium (Chemistry)

Answer 2

2 opposite processes occuring @ the same rate

Question 3

Rate

Answer 3

Change in something divided by change in time

Question 4

When Non-Reversible Reactions Stop

Answer 4

Go until one reactant used up

Question 5

Typical Way To Reach Equilibrium In Reactions

Answer 5

Many reactions reach equilibrium when reactants of forward and reverse reaction are the same rate

Question 6

Concentration At Equilibrium

Answer 6

At equilibrium, concentration is constant

Question 7

Equilibrium Constant (K)

Answer 7

Mathematical description of a reaction
[Product 1]^coefficient * [Product 2]^coefficient *…/[Reactant 1]^coefficient * [Reactant 2]^coefficient *…

Question 8

Equilibrium Constant (K) Relating Relative Concentrations Of Products & Reactants

Answer 8

K about 1: [Products] about [Reactants]
K&raquo_space; 1: [Products] > [Reactants]
K &laquo_space;1: [Products] < [Reactants]

Question 9

Law of Mass Action

Answer 9

At equilibrium, the ratio [Products]/[Reactants], for a given reaction at the same temperature is a constant

Question 10

Le Chatelier’s Principle

Answer 10

If an equilibrium system is subjected to a stress, the system will shift to counteract that stress

Question 11

Stress

Answer 11

Change in [Product] or [Reactant]; change in pressure or volume of container (when gases are present); change in temperature; Not Catalyst

Question 12

How Changes Affect Le Chatelier’s Principle

Answer 12

Increase of something equals a shift away from that side; decrease equals a shift toward that side