Podcast
Questions and Answers
What is the condition for chemical equilibrium?
What is the condition for chemical equilibrium?
- Concentrations of reactants are constant
- Rates of forward reaction equal rates of reverse reaction (correct)
- Concentrations of products are higher than reactants
- Rates of forward reaction are faster than reverse reaction
What does the equilibrium expression represent?
What does the equilibrium expression represent?
- Volume change during a reaction
- Rate of the forward reaction
- Temperature dependence of a reaction
- Concentrations of product and reactant in a reaction (correct)
What does the equilibrium constant, K, predict?
What does the equilibrium constant, K, predict?
- Temperature at which equilibrium is achieved
- Initial concentrations of reactants
- Rate of the chemical reaction
- Extent of established chemical reaction (correct)
What is a characteristic of the equilibrium constant, K?
What is a characteristic of the equilibrium constant, K?
Which factor determines the direction of the net reaction in a given set of initial concentrations?
Which factor determines the direction of the net reaction in a given set of initial concentrations?
What does Le Châtelier's Principle help predict in a system at equilibrium?
What does Le Châtelier's Principle help predict in a system at equilibrium?
According to the Debye-Hückel equation, how does the activity coefficient of an ion change with increasing ionic strength?
According to the Debye-Hückel equation, how does the activity coefficient of an ion change with increasing ionic strength?
How does the charge of an ion affect the departure of its activity coefficient from unity?
How does the charge of an ion affect the departure of its activity coefficient from unity?
What is the relationship between ion size and activity effects?
What is the relationship between ion size and activity effects?
Which of the following equilibria is NOT affected by the ionic strength of the solution?
Which of the following equilibria is NOT affected by the ionic strength of the solution?
If the activity coefficient of Ca2+ is found using the Debye-Hückel equation, what parameter is NOT needed for the calculation?
If the activity coefficient of Ca2+ is found using the Debye-Hückel equation, what parameter is NOT needed for the calculation?
How does Le Châtelier's principle apply to the effect of ionic strength on chemical reactions?
How does Le Châtelier's principle apply to the effect of ionic strength on chemical reactions?
What is the effect of adding a reactant to a homogeneous equilibrium system?
What is the effect of adding a reactant to a homogeneous equilibrium system?
What type of equilibrium is represented by the reaction CaCO3(s) + H2O(l) + CO2(aq) ⇄ Ca2+(aq) + 2HCO3-(aq)?
What type of equilibrium is represented by the reaction CaCO3(s) + H2O(l) + CO2(aq) ⇄ Ca2+(aq) + 2HCO3-(aq)?
Which of the following statements about Le Châtelier's principle is correct?
Which of the following statements about Le Châtelier's principle is correct?
Which of the following is not a form of equilibrium?
Which of the following is not a form of equilibrium?
What happens to a heterogeneous equilibrium system when the temperature is decreased?
What happens to a heterogeneous equilibrium system when the temperature is decreased?
What is the effect of increasing pressure on a system where the number of gas molecules on the reactant side is greater than the number of gas molecules on the product side?
What is the effect of increasing pressure on a system where the number of gas molecules on the reactant side is greater than the number of gas molecules on the product side?
