Dynamic equilibrium

Question 1

Reversible reaction

Answer 1

forward reaction as well as a backward reaction

Question 2

Forward reaction

Answer 2

reactants converted to products

Question 3

Backward reaction

Answer 3

products converted back to reactants

Question 4

Dynamic equilibrium

Answer 4

rate of forward reaction = rate of backward reaction
- constant interchange between products & reactants
- concentrations of reactants & products do not change

Question 5

Effect of concentration on dynamic equilibrium

Answer 5

• increase in concentration of reactant
• shift equilibrium position to the right
• forward reaction favoured
• more products formed
• increasing rate of reaction

Question 6

Effect of temperature on dynamic equilibrium
- exothermic reaction

Answer 6

• liberates heat
• increase in temperature would favour backward reaction
• low temperature must be used to favour forward reaction
• not too low so as to stop the reaction

Question 7

Effect of temperature on dynamic equilibrium
- endothermic reaction

Answer 7

• absorbs heat
• increase in temperature
• forward reaction favoured
• more products formed
• increase in rate of reaction

Question 8

Effect of pressure on dynamic equilibrium

Answer 8

• only gaseous reactions
• depends on number of moles of gaseous reactants & products shown in equation