Differentiate between forward and reverse reactions.
What is chemical equilibrium?
Write two chemical equations of reversible reactions.
Coal reacts with hot steam to form CO and H2. These substances react further in the presence of a catalyst to give methane and water vapor.
How does temperature affect cobalt chloride equilibrium?
Bromide chloride (BrCl) decomposes to form chlorine and Bromine. For this reason write.
List two examples of everyday processes that involve reversible reactions.
Briefly define the term "equilibrium" in a chemical reaction.
In your own words, explain the difference between a reversible and an irreversible reaction.
How can changing the temperature of a reversible reaction system affect the equilibrium position?
Describe the concept of Le Chatelier‘s Principle in a single sentence.
Copper(II) sulfate crystals turn blue when heated (lose water) and colorless when cooled (absorb water). Explain this phenomenon using the concept of reversible reactions.
Baking soda and vinegar react to form carbon dioxide gas. How can you manipulate the pressure in the system to create more bubbles? Give your reasoning.
A reversible reaction produces heat. Predict how adding a catalyst would affect the equilibrium position.
What are some factors that can influence the rate of a chemical reaction?
Define the terms "reactant" and "product" in a chemical reaction.
Differentiate between the rate and the equilibrium of a chemical reaction.
Differentiate between a physical and a chemical change in a substance.
A sealed container holds a mixture of hydrogen gas (H₂) and oxygen gas (O₂) at equilibrium. If a spark ignites the mixture, how will the equilibrium be affected? Give your reasoning.
Sugar readily dissolves in water. Is this a reversible reaction? How can we identify the reactants and products in this process?
How reversible reactions may not go to completion. Provide an example to illustrate this idea.
How does increasing the temperature affect the position of equilibrium for an exothermic reversible reaction?
What happens to the equilibrium position when a reactant is added to a system at equilibrium?
Describe the effect of pressure increase on the equilibrium of a gaseous reversible reaction involving unequal moles of gas on either side.
How does the addition of water affect the equilibrium of an anhydrous compound like copper(II) sulfate?
Why might cooling a system containing a hydrated compound shift the equilibrium?
In a closed system at equilibrium, what is the effect of removing one of the products from the reaction mixture?