Equilibrium

What are the two factors to look for when determining if the reaction is at equilibrium?

• Forward reaction rate is faster than the reverse and concentrations are equal
• Forward and reverse reaction rates are equal and concentration is conctant
• Forward and revers reaction rates are equal and concentration is equal
• Forward reaction rate is faster than the reverse and concentration is equal

Tags

NGSS.HS-PS1-6

This symbol indicates that a reaction is ____________

• reversible
• irreversible

Tags

NGSS.HS-PS1-6

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-PS1-6

At what time the reaction reached equilibrium?

• t₁
• t₂
• t₃
• t₄

Tags

NGSS.HS-PS1-6

Identify the labels (a) and (b) on the graph.

• a is concentration of reactants and b is the concentration of product
• a is concentration of product and b is the concentration of reactant
• a is the volume of reactants and b is the volume of product
• a the mass of reactants and b is the mass of product

Tags

NGSS.HS-PS1-5

NGSS.HS-PS1-6

Define chemical equilibrium.

• A reaction is reversible.
• The concentration of the reactants is equal to the concentration of the products.
• The rate of a forward reaction is equal to the rate of the reverse reaction.
• The reaction stops and no further change in concentration occurs.

Tags

NGSS.HS-PS1-6

How do catalysts increase the rate of reaction?

• The frequency of collisions is the increased
• the activation energy is lowered
• the energy of collisions is increased
• Both the frequency and energy of collisions is increased

Tags

NGSS.HS-PS1-5

2A + 3B  <---->  2AB
The forward reaction forms the substance __________.

• A
• B
• AB
• A + B

Tags

NGSS.HS-PS1-2

2A + 3B  <---->  2AB
The reverse reaction points towards the __________.

• left
• right
• up
• down

Tags

NGSS.HS-PS1-6

If a salt solution is at equilibrium, it is

• unsaturated

• saturated

• super-saturated

• salty