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Exothermic processes

Key Questions

  • Answer:

    Take the example of formation of water from Hydrogen, Oxygen this reaction highly exothermic but kinetically slow

    Explanation:

    The reaction to proceed first the reactants have to cross their activation energy barrier so that they form products giving the energy. Hence catalyst or temperature of the process plays a role in reaction to proceed spontaneously

    The other example is burning of LPG gas requires ignition for reaction to gets started even though reaction is spontaneous.

    Here is a video that explains spontaneity and signs of enthalpy and entropy:

  • Answer:

    see answer below

    Explanation:

    Exothermic reaction is a reaction that releases heat.
    Examples are:
    - combustion
    - rusting
    -nuclear fission
    - acid/base neutralization
    -elephant toothpaste experiment
    -freezing water into ice cubes
    -burning a candle

Questions