Chemistry Practice Problems Hess's Law Practice Problems Solution: Now consider the following set of reactions:2NO2 →...

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Solution: Now consider the following set of reactions:2NO2 → 2NO + O2, H=109 kJ/molN2O4 → 2NO + O2, H=172 kJ/molThe equations given in the problem introduction can be added together to give the following reaction:overall: N2O4 → 2NO2 However, one of them must be reversed. Which one:a. 2NO2 → 2NO + O2b. N2O4 → 2NO + O2

Problem

Now consider the following set of reactions:

2NO2 → 2NO + O2, H=109 kJ/mol

N2O4 → 2NO + O2, H=172 kJ/mol

The equations given in the problem introduction can be added together to give the following reaction:

overall: N2O4 → 2NO

However, one of them must be reversed. Which one:

a. 2NO2 → 2NO + O2

b. N2O4 → 2NO + O2