Final answer:
An example of a type of reaction with a very high activation energy is the reaction between hydrogen and oxygen to form water.
Step-by-step explanation:
An example of a type of reaction that would have a very high activation energy is the reaction between hydrogen gas and oxygen gas to form water. This reaction requires a lot of energy to initiate because the bonds between the hydrogen and oxygen atoms in the reactant molecules need to be broken before new bonds can form to generate water.
Additionally, endothermic reactions generally have higher activation energies compared to exothermic reactions. This is because endothermic reactions absorb energy from the surroundings, whereas exothermic reactions release energy.
High activation energy is also observed in reactions that involve the breaking of stable and strong bonds, such as the decomposition of ozone into oxygen molecules. This reaction has a very high activation energy because the O-O bond in ozone is already quite stable and requires a significant amount of energy to break.
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