Hydrogen peroxide (H2O2) decomposes to form water and oxygen gas (O2). Answer th

Question

Hydrogen peroxide (H2O2) decomposes to form water and oxygen gas (O2). Answer the following questions regarding bond enthalpy.

Using the bond enthalpies below, approximate the change in energy of this reaction in kJ/mol. Note: balance the reaction using the lowest whole number coefficients.

Hydrogen peroxide (H202) decomposes to form water and oxygen gas (O2). Answer the following questions regarding bond enthalpy. Part 1: Using the bond enthalpies below, approximate the change in energy of this reaction in kJ/mol. Note: balance the reaction using the lowest whole number coefficients Bond Bond Enthalpy (k/mol) O--O 221 496 O-H 462 Part 2 Type here to search 94

Explanation / Answer

2H-O-O-H give2 H-O-H + O=O

In this reaction,

one one O-O bond is broken and one O=O is formed. All other bonds remain as such

Change in energy = products-reactants = 496 - 2 (221) = 54 kJ/mol

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