Podcast
Questions and Answers
What is true about the half-time of a second-order reaction?
What is true about the half-time of a second-order reaction?
- It is proportional to the initial concentration of the reactant
- It is independent of the initial concentration of the reactant (correct)
- It is dependent on the initial concentration of the reactant but not in a simple way
- It is inversely proportional to the initial concentration of the reactant
What is the unit of the rate constant k in a first-order reaction?
What is the unit of the rate constant k in a first-order reaction?
- mol.L-1.s-1
- s
- s-1 (correct)
- L.s-1
Which property is used when calculating the enthalpy change of a reaction using Hess's law?
Which property is used when calculating the enthalpy change of a reaction using Hess's law?
- Enthalpy (correct)
- Pressure
- Temperature
- Entropy
What is the term for the study of the heat associated with chemical reactions and physical processes?
What is the term for the study of the heat associated with chemical reactions and physical processes?
What type of system can exchange energy with its surroundings freely?
What type of system can exchange energy with its surroundings freely?
What is the term for a process that gives out heat and transfers heat energy to the surroundings?
What is the term for a process that gives out heat and transfers heat energy to the surroundings?
What is the correct formula for the acid dissociation constant Ka for the reaction HCl + H2O → H3O+ + Cl-?
What is the correct formula for the acid dissociation constant Ka for the reaction HCl + H2O → H3O+ + Cl-?
What is the relationship between Ka and Kb values and acid and base strength?
What is the relationship between Ka and Kb values and acid and base strength?
What is a titration curve?
What is a titration curve?
Which of the following acids is a strong acid?
Which of the following acids is a strong acid?
What is the acid-dissociation constant Ka for the pyridinium ion, C5H5NH+, given the base-dissociation constant Kb for pyridine, C5H5N, is 1.4 × 10-9?
What is the acid-dissociation constant Ka for the pyridinium ion, C5H5NH+, given the base-dissociation constant Kb for pyridine, C5H5N, is 1.4 × 10-9?
What types of elements typically form ionic bonds?
What types of elements typically form ionic bonds?
