Question 1

What term is used to describe a reaction in which the reactants turn into products and the products turn into reactants?

Accepted Answer

reversible reaction

Answer

equilibrium reaction

Answer

forward and reverse reaction

Answer

repeatable reaction

Question 2

Which symbol shows a reversible reaction?

Accepted Answer

$\rightleftharpoons$

Answer

$\leftharpoonup$

Answer

$\leftrightarrows$

Answer

$ \leftrightarrow$

Question 3

What term is used to describe the point in a reversible reaction when the rate of the forward and reverse reactions are the same?

Accepted Answer

dynamic equilibrium

Answer

simultaneous reaction

Answer

dual reaction

Answer

net equilibrium

Question 4

Which of these reaction conditions CANNOT be changed?

Accepted Answer

reactivity of elements

Answer

concentration

Answer

pressure

Answer

temperature

Question 5

Complete Le Châtelier’s principle: The position of equilibrium will shift to oppose _________

Accepted Answer

external changes

Answer

the production of gases

Answer

the loss of products

Answer

the reverse reaction

Question 6

What is the effect of increasing the concentration of reactants on a reaction at dynamic equilibrium?

Accepted Answer

favours the forward reaction

Answer

favours the reverse reaction

Answer

stays the same, does not favour any side of the reaction

Question 7

What is the effect of decreasing the concentration of products on a reaction at dynamic equilibrium?

Accepted Answer

favours the forward reaction

Answer

favours the reverse reaction

Answer

stays the same, does not favour any side of the reaction

Question 8

What is the effect of increasing pressure on a reaction at dynamic equilibrium?

Accepted Answer

favours the reaction that leads to the fewest molecules

Answer

stays the same, does not favour any side of the reaction

Answer

favours the forward reaction

Answer

favours the reaction that leads to the most molecules

Question 9

What is the effect of decreasing pressure on a reaction at dynamic equilibrium?

Accepted Answer

favours the reaction that leads to the most molecules

Answer

stays the same, does not favour any side of the reaction

Answer

favours the reaction that leads to the fewest molecules

Answer

favours the reverse reaction

Question 10

What is the effect of increasing temperature on a reaction at dynamic equilibrium?

Accepted Answer

favours the endothermic reaction

Answer

favours the reaction that leads to the most molecules

Answer

favours the reaction that leads to the fewest molecules

Answer

favours the exothermic reaction

Question 11

What is the effect of decreasing temperature on a reaction at dynamic equilibrium?

Accepted Answer

favours the exothermic reaction

Answer

favours the endothermic reaction

Answer

favours the reaction that leads to the fewest molecules

Answer

favours the reaction that leads to the most molecules

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