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22 January, 16:54

Doing an Endothermic reaction, what happens to energy in relation to the surroundings?

A. released to

B. absorbed from

C. mixed with

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Answers (1)
  1. 22 January, 19:49
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    Doing an Endothermic reaction, energy is absorbed from surroundings

    Explanation:

    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

    we can see that 131 kj/mol energy is taken by the reactants. So energy is absorbed from surrounding.

    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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