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21 May, 17:47

What is the temp difference for endo and exothermic

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  1. 21 May, 21:05
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    In endothermic reaction heat is absorbed and in exothermic reaction heat is released.

    Explanation:

    The energy changes occur during the bonds formation and bonds breaking.

    There are two types of reaction endothermic and exothermic reaction.

    Endothermic reactions:

    The type of reactions in which energy is absorbed are called endothermic reactions.

    In this type of reaction energy needed to break the bond are higher than the energy released during bond formation.

    For example:

    C + H₂O → CO + H₂

    ΔH = + 131 kj/mol

    it can be written as,

    C + H₂O + 131 kj/mol → CO + H₂

    Exothermic reaction:

    The type of reactions in which energy is released are called exothermic reactions.

    In this type of reaction energy needed to break the bonds are less than the energy released during the bond formation.

    For example:

    Chemical equation:

    C + O₂ → CO₂

    ΔH = - 393 Kj/mol

    it can be written as,

    C + O₂ → CO₂ + 393 Kj/mol
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