What is the effect of increasing temperature on the cell potential of an electro

Practice Questions

Q1
What is the effect of increasing temperature on the cell potential of an electrochemical reaction?
  1. Increases cell potential.
  2. Decreases cell potential.
  3. No effect on cell potential.
  4. Depends on the reaction.

Questions & Step-by-Step Solutions

What is the effect of increasing temperature on the cell potential of an electrochemical reaction?
  • Step 1: Understand that cell potential is the voltage produced by an electrochemical reaction.
  • Step 2: Know that temperature can affect how well a reaction occurs.
  • Step 3: Learn about enthalpy, which is the heat content of a reaction, and entropy, which is the measure of disorder.
  • Step 4: Recognize that if a reaction absorbs heat (endothermic), increasing temperature usually increases cell potential.
  • Step 5: Conversely, if a reaction releases heat (exothermic), increasing temperature usually decreases cell potential.
  • Step 6: Use the Gibbs free energy equation (ΔG = ΔH - TΔS) to see how temperature, enthalpy, and entropy interact.
  • Step 7: Conclude that the overall effect of temperature on cell potential depends on the specific reaction's enthalpy and entropy changes.
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