Podcast
Questions and Answers
What is the condition for considering an intermediate compound as a stationary state?
What is the condition for considering an intermediate compound as a stationary state?
- When k1 >> k2
- When k2 = 0
- When k2 >> k1 (correct)
- When k1 = k2
Which type of reaction involves the absorption of light energy to initiate the reaction?
Which type of reaction involves the absorption of light energy to initiate the reaction?
- Photophysical process
- Parallel reaction
- Photochemical reaction (correct)
- Thermodynamically favored reaction
What is the characteristic of a parallel reaction?
What is the characteristic of a parallel reaction?
- Multiple reactions occur simultaneously (correct)
- The reaction is thermodynamically favored
- The reaction occurs in the dark
- Only one reactant is involved
What is the energy associated with each photon in a photochemical reaction?
What is the energy associated with each photon in a photochemical reaction?
What is the term for the process in which a molecule absorbs light energy and transitions to a higher energy level?
What is the term for the process in which a molecule absorbs light energy and transitions to a higher energy level?
What is the primary reason for the dependence of photochemical reaction rates on the intensity of radiation?
What is the primary reason for the dependence of photochemical reaction rates on the intensity of radiation?
In the photochemical combination of H and Cl, what is the role of the excited chlorine molecule (Cl2*)?
In the photochemical combination of H and Cl, what is the role of the excited chlorine molecule (Cl2*)?
Why do different photochemical reactions have different rates?
Why do different photochemical reactions have different rates?
What is the effect of temperature on the rate of light-initiated reactions?
What is the effect of temperature on the rate of light-initiated reactions?
What is the role of hv in the photochemical combination of H and Cl?
What is the role of hv in the photochemical combination of H and Cl?
What is the significance of the negative free energy change in a thermochemical reaction?
What is the significance of the negative free energy change in a thermochemical reaction?
Which step is highly endothermic and limits the feasibility of the subsequent step in the reaction mechanism?
Which step is highly endothermic and limits the feasibility of the subsequent step in the reaction mechanism?
What is the reason for the lower values of HBr formation per photon of light absorbed in the given reaction mechanism?
What is the reason for the lower values of HBr formation per photon of light absorbed in the given reaction mechanism?
What is the significance of the quantum yield in a photochemical reaction?
What is the significance of the quantum yield in a photochemical reaction?
Which of the following applications is not a direct result of photochemical reactions?
Which of the following applications is not a direct result of photochemical reactions?
What is the condition for equation (3) to be valid?
What is the condition for equation (3) to be valid?
In parallel reactions, what is the characteristic of the reactants?
In parallel reactions, what is the characteristic of the reactants?
What is the energy required for a reactant molecule to cross the energy barrier in a photochemical reaction?
What is the energy required for a reactant molecule to cross the energy barrier in a photochemical reaction?
What is the term for the process in which a molecule absorbs light energy and transitions to a higher energy level, and then loses its energy through a chemical reaction?
What is the term for the process in which a molecule absorbs light energy and transitions to a higher energy level, and then loses its energy through a chemical reaction?
What is the characteristic of photochemical reactions that distinguishes them from thermal reactions?
What is the characteristic of photochemical reactions that distinguishes them from thermal reactions?
What is the primary reason for the decrease in HBr formation per photon of light absorbed in the given reaction mechanism?
What is the primary reason for the decrease in HBr formation per photon of light absorbed in the given reaction mechanism?
Which step is responsible for the regeneration of free radicals in the given reaction mechanism?
Which step is responsible for the regeneration of free radicals in the given reaction mechanism?
What is the significance of the delta G value in photochemical reactions?
What is the significance of the delta G value in photochemical reactions?
What is the role of light energy in photochemical reactions?
What is the role of light energy in photochemical reactions?
What is the application of photochemistry in the electronic industry?
What is the application of photochemistry in the electronic industry?
What is the reason for the dependence of photochemical reaction rates on the intensity of radiation?
What is the reason for the dependence of photochemical reaction rates on the intensity of radiation?
What is the characteristic of the excited molecule (Cl2*) in the photochemical combination of H and Cl?
What is the characteristic of the excited molecule (Cl2*) in the photochemical combination of H and Cl?
Why do some photochemical reactions have a higher yield of products than others?
Why do some photochemical reactions have a higher yield of products than others?
What is the significance of the wavelength of photon in a photochemical reaction?
What is the significance of the wavelength of photon in a photochemical reaction?
What is the role of light in a photochemical reaction?
What is the role of light in a photochemical reaction?
