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A photochemical reaction was carried out using a monochromatic nm) of intensity 100 W. When the sample was irradiated for 30 min reactant was decomposed. The quantum efficiency (assuming 50% this reaction was close to 1. 0.617 2. 0.718 3. 0.817 4. 0.918?
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A photochemical reaction was carried out using a monochromatic nm) of ...
Photochemical Reaction and Quantum Efficiency
Photochemical reactions are chemical reactions that are initiated by the absorption of light. These reactions occur when molecules absorb photons of specific energy, promoting them to an excited state where they can undergo chemical transformations. The efficiency of a photochemical reaction is often characterized by the quantum efficiency, which measures the ratio of the number of molecules undergoing the desired reaction to the number of absorbed photons.
- Monochromatic light of intensity 100 W was used for the photochemical reaction.
- The reaction was carried out for 30 minutes.
- The reactant was completely decomposed.
- The quantum efficiency is assumed to be 50%.
The quantum efficiency (Φ) can be calculated using the following formula:
Φ = (Number of molecules undergoing the desired reaction) / (Number of absorbed photons)
To calculate the number of absorbed photons, we need to know the energy of the photons and the duration of the reaction.
The energy of a photon can be calculated using the equation:
E = (hc) / λ
Where:
- E is the energy of the photon
- h is the Planck's constant (6.626 x 10^-34 J.s)
- c is the speed of light (3.0 x 10^8 m/s)
- λ is the wavelength of light in meters
Since the wavelength of the monochromatic light is not provided in the given information, we are unable to calculate the number of absorbed photons accurately.
With the given information, we are unable to calculate the quantum efficiency accurately. However, we can make an estimation assuming a 50% quantum efficiency.
If the quantum efficiency is close to 1, it means that almost all the absorbed photons are being utilized for the desired reaction. A quantum efficiency of 0.617, 0.718, 0.817, or 0.918 would indicate that a significant fraction of the absorbed photons are being utilized for the reaction.
Considering the assumption of 50% quantum efficiency, we can estimate that approximately half of the absorbed photons are contributing to the reaction. Therefore, the quantum efficiency would be close to 0.5.
Conclusion
Based on the given information and the assumption of 50% quantum efficiency, the quantum efficiency for the photochemical reaction is estimated to be close to 0.5. However, without knowing the wavelength of the monochromatic light, an accurate calculation of the quantum efficiency is not possible.
Introduction
Photochemical reactions are chemical reactions that are initiated by the absorption of light. These reactions occur when molecules absorb photons of specific energy, promoting them to an excited state where they can undergo chemical transformations. The efficiency of a photochemical reaction is often characterized by the quantum efficiency, which measures the ratio of the number of molecules undergoing the desired reaction to the number of absorbed photons.
Given Information
- Monochromatic light of intensity 100 W was used for the photochemical reaction.
- The reaction was carried out for 30 minutes.
- The reactant was completely decomposed.
- The quantum efficiency is assumed to be 50%.
Calculating Quantum Efficiency
The quantum efficiency (Φ) can be calculated using the following formula:
Φ = (Number of molecules undergoing the desired reaction) / (Number of absorbed photons)
To calculate the number of absorbed photons, we need to know the energy of the photons and the duration of the reaction.
Calculating Number of Absorbed Photons
The energy of a photon can be calculated using the equation:
E = (hc) / λ
Where:
- E is the energy of the photon
- h is the Planck's constant (6.626 x 10^-34 J.s)
- c is the speed of light (3.0 x 10^8 m/s)
- λ is the wavelength of light in meters
Since the wavelength of the monochromatic light is not provided in the given information, we are unable to calculate the number of absorbed photons accurately.
Quantum Efficiency Calculation
With the given information, we are unable to calculate the quantum efficiency accurately. However, we can make an estimation assuming a 50% quantum efficiency.
If the quantum efficiency is close to 1, it means that almost all the absorbed photons are being utilized for the desired reaction. A quantum efficiency of 0.617, 0.718, 0.817, or 0.918 would indicate that a significant fraction of the absorbed photons are being utilized for the reaction.
Considering the assumption of 50% quantum efficiency, we can estimate that approximately half of the absorbed photons are contributing to the reaction. Therefore, the quantum efficiency would be close to 0.5.
Conclusion
Based on the given information and the assumption of 50% quantum efficiency, the quantum efficiency for the photochemical reaction is estimated to be close to 0.5. However, without knowing the wavelength of the monochromatic light, an accurate calculation of the quantum efficiency is not possible.
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A photochemical reaction was carried out using a monochromatic nm) of intensity 100 W. When the sample was irradiated for 30 min reactant was decomposed. The quantum efficiency (assuming 50% this reaction was close to 1. 0.617 2. 0.718 3. 0.817 4. 0.918?
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A photochemical reaction was carried out using a monochromatic nm) of intensity 100 W. When the sample was irradiated for 30 min reactant was decomposed. The quantum efficiency (assuming 50% this reaction was close to 1. 0.617 2. 0.718 3. 0.817 4. 0.918? for Chemistry 2024 is part of Chemistry preparation. The Question and answers have been prepared according to the Chemistry exam syllabus. Information about A photochemical reaction was carried out using a monochromatic nm) of intensity 100 W. When the sample was irradiated for 30 min reactant was decomposed. The quantum efficiency (assuming 50% this reaction was close to 1. 0.617 2. 0.718 3. 0.817 4. 0.918? covers all topics & solutions for Chemistry 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A photochemical reaction was carried out using a monochromatic nm) of intensity 100 W. When the sample was irradiated for 30 min reactant was decomposed. The quantum efficiency (assuming 50% this reaction was close to 1. 0.617 2. 0.718 3. 0.817 4. 0.918?.
A photochemical reaction was carried out using a monochromatic nm) of intensity 100 W. When the sample was irradiated for 30 min reactant was decomposed. The quantum efficiency (assuming 50% this reaction was close to 1. 0.617 2. 0.718 3. 0.817 4. 0.918? for Chemistry 2024 is part of Chemistry preparation. The Question and answers have been prepared according to the Chemistry exam syllabus. Information about A photochemical reaction was carried out using a monochromatic nm) of intensity 100 W. When the sample was irradiated for 30 min reactant was decomposed. The quantum efficiency (assuming 50% this reaction was close to 1. 0.617 2. 0.718 3. 0.817 4. 0.918? covers all topics & solutions for Chemistry 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A photochemical reaction was carried out using a monochromatic nm) of intensity 100 W. When the sample was irradiated for 30 min reactant was decomposed. The quantum efficiency (assuming 50% this reaction was close to 1. 0.617 2. 0.718 3. 0.817 4. 0.918?.
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