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If hydrogen peroxide H2O2 decomposes according to the equation: 2H2O2 → 2H2O + O2                      ∆H =...

  1. If hydrogen peroxide H2O2 decomposes according to the equation:

2H2O2 → 2H2O + O2                      ∆H = −196 kJ

Calculate the heat evolved on decomposition of 5g of H2O2.

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Answer #1

It is based on concept of thermodynamics on enthalpy change. It can be done as follows:

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