Equilibrium Constants and Reactions

The video tutorial explains how modifications to chemical equations affect equilibrium constants. It covers reversing equations, adding equations, and multiplying equations by a constant, demonstrating how each action impacts the equilibrium constant value. The tutorial provides examples and practice questions to reinforce understanding.

In a reactant-favored equilibrium, which of the following is true?

• The equilibrium constant is large.

• The equilibrium constant is small.

• The concentration of products is higher.

• The reaction is at equilibrium.

What does a small equilibrium constant indicate about a reaction?

• The reaction is fast.

• The reaction is product-favored.

• The reaction is reactant-favored.

• The reaction is at equilibrium.

What happens to the equilibrium constant when an equation is reversed?

• It is added to the original.

• It becomes the inverse of the original.

• It is multiplied by a constant.

• It remains the same.

How do you denote a modified equilibrium constant?

• With a prime symbol.

• With a subscript 'm'.

• With a superscript 'c'.

• With a double prime symbol.

What is the result of taking the inverse of an equilibrium constant?

• The reaction becomes slower.

• The reaction becomes reactant-favored.

• The reaction becomes product-favored.

• The reaction remains unchanged.

What is the significance of a large equilibrium constant?

• The reaction is at equilibrium.

• The reaction is reactant-favored.

• The reaction is product-favored.

• The reaction is slow.

When two equations are added together, how is the new equilibrium constant determined?

• By adding the two constants.

• By multiplying the two constants.

• By subtracting the smaller constant from the larger one.

• By dividing the larger constant by the smaller one.

What is the effect of multiplying an equation by a constant on the equilibrium constant?

• The equilibrium constant is halved.

• The equilibrium constant is raised to the power of the constant.

• The equilibrium constant is squared.

• The equilibrium constant is doubled.

When multiplying an equation by three, what happens to the exponents in the equilibrium expression?

• They remain unchanged.

• They are divided by three.

• They are added to three.

• They are multiplied by three.

What is the new equilibrium constant when an equation is multiplied by a constant?

• The original constant is halved.

• The original constant is doubled.

• The original constant is raised to the power of the constant.

• The original constant is squared.