Chemical Equilibria and Reaction Quotients

The video tutorial covers the concept of chemical equilibrium, explaining how reactions can be reversible and reach a state of dynamic equilibrium. It introduces the ICE box method for calculating equilibrium concentrations and explains equilibrium constant expressions. The tutorial also discusses how to use stoichiometry in equilibrium calculations and provides examples of solving equilibrium problems using the ICE box method.

What is the state called when the rates of forward and reverse reactions are equal?

• Reaction stasis

• Dynamic equilibrium

• Static equilibrium

• Chemical balance

In the ICE box method, what does the 'C' stand for?

• Concentration

• Constant

• Change

• Coefficient

What does a Kc value much greater than 1 indicate?

• More reactants are formed

• The reaction is slow

• The reaction is at equilibrium

• More products are formed

Which species are included in the equilibrium constant expression?

• Solids and gases

• Liquids and solids

• Gases and aqueous species

• All species

What is the reaction quotient Q used for?

• To determine pressure

• To calculate temperature

• To predict the direction of the reaction

• To measure reaction speed

In an advanced ICE box example, if the stoichiometry is 2:1, how is the change represented?

• Subtract x for reactants, add 2x for products

• Subtract 2x for reactants, add x for products

• Add x for reactants, subtract 2x for products

• Add 2x for reactants, subtract x for products

What mathematical method might be needed if the equilibrium expression is not easily simplified?

• Linear equation

• Quadratic equation

• Logarithmic equation

• Exponential equation