Equilibrium. The ICE table

Equilibrium. The ICE table

by Luis Bello

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Checking Comprehension​

Multiple Choice

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 constant

• Forward and revers reaction rates are equal and concentration is equal

• Forward reaction rate is faster than the reverse and concentration is equal

Multiple Choice

Which of the following is NOT true at equilibrium?

• The forward and reverse reactions proceed at the same rate.

• The concentrations of reactants and products do not change.

• The concentration of the reactants is equal to the concentration of the products.

• The forward and reverse reactions continue to occur.

Multiple Choice

At what time the reaction reached equilibrium?

• t₁

• t₂

• t₃

• t₄

Multiple Choice

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

Multiple Choice

Which of the following is the condition needed to establish the equilibrium?

• Constant Temperature

• Products and reactants should be in constant dynamic motion

• All reactants and products should be in closed system

• All of the above

Multiple Choice

This symbol indicates that a reaction is ____________

• reversible

• irreversible

Multiple Choice

What is the equilibrium-constant expression for  CO₂(g) + H₂(g) ↔ CO(g) + H₂O(l)

• K_c= [CO][H₂O] / [CO₂][H₂]  

• K_c= [CO₂][H₂] / [CO]

• K_c= [CO₂][H₂] / [CO][H₂O]

• K_c= [CO] / [CO₂][H₂]  

Multiple Choice

For the reaction... N_{2 (g)} +  3 H_2 (g) <−> 2 NH_{3 (g)} If the pressure in the system is increased,  which substance will increase in concentration?

• N₂

• H₂

• N₂ and H₂

• NH₃

Multiple Choice

For the reaction... SO₂ + O₂  <−>  SO₃ If the concentration of SO₂ is increased, the equilibrium of the reaction will shift ___________.

• left

• right

• left and right 

• neither left nor right

Multiple Choice

For the reaction... SO₂ + O₂ <−>  SO₃ If the equilibrium shifts to the right, the concentration of O₂ will ___________.

• increase

• decrease

• remain the same

• double