8.1 Dynamic Equilibrium

This symbol indicates that a reaction is ____________

• reversible
• irreversible

Tags

NGSS.HS-PS1-6

Which of the following is incorrect? 
A dynamic equilibrium can be achieved...

• From 100% reactants
• From 100% products
• In a closed system
• In an open system

When the rate of the forward reaction is equal to the rate of backward reaction, the system is said to be in

• Chemical Equilibrium
• Chemical Balance
• Chemical Constant
• Chemical Reaction

Tags

NGSS.HS-PS1-5

Define chemical equilibrium.

• A reaction is reversible.

• A state where the concentration of the reactants is equal to the concentration of the products.

• A state where the rate of a forward reaction is equal to the rate of the reverse reaction.

• A state where the reaction stops and no further change in concentration occurs.

Around what time does the reaction reach equilibrium?

• 25 min

• 45 min

• 70 min

• 80 min

Tags

NGSS.HS-PS1-5

At what time on the graph will the reaction reach equilibrium?

• t₁

• t₂

• t₃

• t₄

Tags

NGSS.HS-PS1-5

What is the relationship between the forward rate of reaction and the reverse rate of reaction in a reversible reaction at equilibrium?

• forward is greater

• reverse is greater

• the two are equal

• can not determine unless you know the rate law and k.

Can a chemical equilibrium be determined just by observing the change in concentration of ONE species in a system?

• Yes

• No

The reaction quotient of a reaction at equilibrium is 4.2 x 10⁹. Which of the following statement is true?

• At this point, the concentration of reactants and products are zero

• At this point, the rate of formation of reactants and products are zero

• At this point, the equilibrium constant is zero

• At this point, the reaction has stopped.