Equilibrium

Question 1

Dynamic equilibrium

Answer 1

State where rates of forward and reverse reactions are equal and concentration of reactants and products remain constant

Question 2

Deuterium labeling in ammonia synthesis

Answer 2

Proves ammonia is constantly being formed and consumed

Question 3

Equilibrium constant ( kc) values

Answer 3

Refers to a direction and stoichiometry for a reaction

Question 4

Electrolyte

Answer 4

Dissociates in water into ions

Question 5

Strong electrolytes

Answer 5

Acids and bases that completely ionize

Question 6

Weak electrolytes

Answer 6

Acids and bases that partially ionize

Question 7

Hydrated proton

Answer 7

Hydronium ion

Question 8

Water auto-ionisation

Answer 8

Pure water weakly conducts electricity

Question 9

Le chatelier’s principle

Answer 9

When a stress is applied to a system in dynamic equilibrium, the equilibrium adjusts to minimize the effect of the stress

Question 10

Henry’s law

Answer 10

Amount of a gas in a solution is proportional to its partial pressure above the solution

Question 11

Homogenous equilibrium

Answer 11

Everything is in the same phase

Question 12

Heterogenous equilibrium

Answer 12

Things are in more than one phase

Question 13

Effect of temperature on kc

Answer 13

In exothermic rxn, when temp increases, value of Kc decreases

In endothermic rxn, when temp increases, value of Kc increases

Question 14

Partial pressure

Answer 14

Mole fraction x total pressure

Question 15

Conditions of haber process

Answer 15

400-450degC, 200 atm, iron catalyst w KOH promoter

Question 16

Conditions of contact process

Answer 16

400-450degC, 1-2 atm, V2O5 catalyst

Question 17

Conditions of manufacture of ethanol

Answer 17

300degC, 60-70 atm, phosphoric(V) acid catalyst with a solid SiO2 coat