Chemical Equilibrium Video Lessons

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Problem: Which statement correctly describes a chemical equilibrium? A. it must take place in an open system B. the mass of the reactants and the mass of the products are not equal C. it is affected by the addition of a catalyst D. it does not involve a reversible reactionE. the concentrations of reactants and products are equal

FREE Expert Solution

Recall that a reaction reaches equilibrium when:

• once the rate of the forward reaction equals the rate of the reverse reaction
 • once at equilibrium there is 
no net change in the concentration of reactants or products

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Problem Details

Which statement correctly describes a chemical equilibrium? 

A. it must take place in an open system 

B. the mass of the reactants and the mass of the products are not equal 

C. it is affected by the addition of a catalyst 

D. it does not involve a reversible reaction

E. the concentrations of reactants and products are equal

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