Chemistry

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H2O2 + Heat = H2O + O2

Would this be combustion or decomposition? Since the products are H2O and O2, I thought it would be combustion but then H2O can be decompose into H2O and O2 which would be decomposition.

  • Chemistry -

    decomposition. Hydrogen peroxide is decomposing to H2O and O2.
    Decomposition occurs when one compound on the left forms more than one on the right.

  • Chemistry -

    DrBob, could you clarify what you mean by " one compound on the left forms more than one on the right" Thanks.

  • Chemistry -

    Synthesis occurs when two or more substances combine to form one.
    2H2 + O2 ==> 2H2O
    Here two reactants (those on the left) combine to form just one product (on the right).

    Decomposition is the reverse of synthesis. One reactant forms more than one product.

  • Chemistry -

    Oh, thanks you for that! If it was H2O2 + O2 + Heat = H2O + O2 it would still be decomposition?

  • Chemistry -

    I don't know how to treat that since th equation isn't balanced and it contains the same material on both sides. I would cancel the O2 on the left with O2 on the right(and balance it) to leave the equation of
    2H2O2 + heat ==> 2H2O + O2 and that is decomposition. What you wrote is not balanced and contains a mo

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