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How can a reaction with positive ΔG be made to occur?
  • a)
    By increasing the temperature
  • b)
    By decreasing the temperature
  • c)
    By coupling it with another reaction
  • d)
    It is not possible for the reaction to occur
Correct answer is option 'C'. Can you explain this answer?
Most Upvoted Answer
How can a reaction with positive ΔG be made to occur?a)By increa...
A reaction with ΔG positive can still be made to occur by coupling it with another reaction having large negative ΔG so that the net ΔG of the two reactions is negative (ΔG = change in the Gibbs energy of the reaction).
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How can a reaction with positive ΔG be made to occur?a)By increa...
Explanation:
Coupling with another reaction
- A reaction with a positive ΔG can be made to occur by coupling it with another reaction that has a highly negative ΔG.
- When the two reactions are coupled together, the overall change in Gibbs free energy becomes negative, allowing the reaction with positive ΔG to proceed.
- The excess energy released from the highly negative ΔG reaction can drive the reaction with positive ΔG to occur.
- This process is often used in living organisms to drive energetically unfavorable reactions, such as ATP hydrolysis coupled with other cellular processes.
Therefore, the correct answer is option 'C' - By coupling it with another reaction.
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How can a reaction with positive ΔG be made to occur?a)By increasing the temperatureb)By decreasing the temperaturec)By coupling it with another reactiond)It is not possible for the reaction to occurCorrect answer is option 'C'. Can you explain this answer?
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