Chemical Equations

Question 1

Equilibrium constant (Keq)=

Answer 1

Keq=[products]/[reactants]

Question 2

if Keq>1 then..

Answer 2

there are more products than reactants

Question 3

if Keq<1 then..

Answer 3

there are more reactants than products

Question 4

Le Chatelier’s principles say..

Answer 4

Every reversible chemical reaction will reach a state of equilibrium as VF=VB .
Any external interference will cause the system to increase VF or VB in order to restore the equilibrium state again.

Question 5

Reactants ↑ =

Answer 5

= VF ↑

Question 6

Products ↑ =

Answer 6

= VB ↑

Question 7

Reactants ↓=

Answer 7

= VB ↑

Question 8

Products ↓=

Answer 8

= VF ↑

Question 9

Pressure effect on equilibrium

Answer 9

Always supports the side with less moles according to balance. Pressure doesn’t affect reactions with an equal number of moles on both sides of the equation.

Question 10

Temperature effect on equilibrium

Answer 10

Endothermic reactions- ΔH+ , Absorbs heat from the environment
Reactants + Heat → Products

Exothermic reactions-ΔH- , Emits heat to the environment
Reactants → Products + Heat

Question 11

Gas→ Liquid is called

Answer 11

condensation

Question 12

solid→ gas is called

Answer 12

sublimination

Question 13

gas→solid is called

Answer 13

deposition