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In an endothermic reaction the A - VCE - SSCE Chemistry - Question 6 - 2011 - Paper 1
Question 6
In an endothermic reaction the A. reaction system loses energy to the surroundings. B. addition of a catalyst increases the activation energy. C. activation energ... show full transcript
Worked Solution & Example Answer:In an endothermic reaction the A - VCE - SSCE Chemistry - Question 6 - 2011 - Paper 1
Step 1
C. activation energy is greater than the enthalpy of reaction.
Answer
In an endothermic reaction, the system absorbs energy from its surroundings, which means the reaction requires an input of energy to proceed. The activation energy is the minimum energy that must be provided for reactants to undergo a chemical reaction.
For endothermic reactions, it's essential that the activation energy is greater than the enthalpy change of the reaction to allow the reaction to progress. This is because the energy needed to break bonds in the reactants must be higher than the energy released in forming bonds in the products, ensuring that the net energy flow is absorbed from the surroundings.