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Which of the following processes has a positive ΔG?

Practice Questions

Q1
Which of the following processes has a positive ΔG?
  1. Combustion of fuels
  2. Dissolution of salts in water
  3. Photosynthesis
  4. Respiration

Questions & Step-by-Step Solutions

Which of the following processes has a positive ΔG?
  • Step 1: Understand what ΔG means. ΔG represents the change in free energy during a process.
  • Step 2: Know that a positive ΔG means the process requires energy to occur.
  • Step 3: Identify the process in question. In this case, it is photosynthesis.
  • Step 4: Recognize that photosynthesis takes in energy from sunlight to convert carbon dioxide and water into glucose and oxygen.
  • Step 5: Conclude that since photosynthesis requires energy, it has a positive ΔG.
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