Conditions For Equilibrium (Grade 10)
Print Test (Only the test content will print)
Conditions For Equilibrium
Which statement correctly compares the rates of forward and reverse reactions at equilibrium?
- The rates are constant
- The rates are equal
- The rate of the reverse reaction is less than that of the forward reaction
- Both (a) and (b)
Which statement correctly describes the concentrations of reactants and products at equilibrium?
- The concentrations of reactants and products are equal
- The concentrations of the reactants are greater
- The concentrations of the products are greater
- The concentrations are constant
Which of the following conditions is always required for equilibrium?
- Concentrations to be zero
- Concentrations of both products and reactants to be increasing
- A closed system
- An irreversible process
Which of the following kinds of changes can reach equilibrium?
- Phase changes
- Chemical reactions
- Dissolving of a solute
- All of the above
Which two processes are involved in the phase equilibrium between a solid and a liquid?
- Melting and Evaporation
- Evaporation and Condensation
- Sublimation and Deposition
- Melting and Freezing
Which two processes are involved in the solution equilibrium between solid NaCl and aqueous NaCl?
- Dissolving and evaporation
- Dissolving and crystallization
- Evaporation and crystallization
- Dissolving and melting
Which statement correctly describes what occurs BEFORE equilibrium is established in a chemical reaction?
- The concentrations of both the products and the reactants decrease
- The concentrations of both the products and the reactants increase
- The concentrations of the products increase, and the concentrations of the reactants decrease
- The concentrations of the products decrease, and the concentrations of the reactants increase
Which term correctly describes a solution that is at equilibrium with the solid form of the solute?
- None of the above
The of the liquid and gas forms of [math]H_2O[/math] each remain constant in the case of a phase equilibrium.
A process at equilibrium can be irreversible.