Problem: Nitric oxides, NO and NO2, contribute to air pollution, acid rain, and the depletion of the ozone layer. After NO forms in the combustion chamber of an automobile engine, it reacts further with oxygen to form NO2. The reaction is given by2NO (g) + O2 (g) → 2NO2 (g) The following table gives some entropy values: Part ACalculate ΔS°rxn for the reaction 2NO (g) + O2 (g) → 2NO2 (g) Express your answer to one decimal place and include the appropriate units. Part BA negative change in entropy indicates that (i) the products are more disordered than the reactants (ii) the products are less disordered than the reactants
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Problem Details
Nitric oxides, NO and NO2, contribute to air pollution, acid rain, and the depletion of the ozone layer. After NO forms in the combustion chamber of an automobile engine, it reacts further with oxygen to form NO2. The reaction is given by
2NO (g) + O2 (g) → 2NO2 (g)
The following table gives some entropy values:
Part A
Calculate ΔS°rxn for the reaction
2NO (g) + O2 (g) → 2NO2 (g)
Express your answer to one decimal place and include the appropriate units.
Part B
A negative change in entropy indicates that
(i) the products are more disordered than the reactants
(ii) the products are less disordered than the reactants
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What scientific concept do you need to know in order to solve this problem?
Our tutors have indicated that to solve this problem you will need to apply the Entropy concept. You can view video lessons to learn Entropy. Or if you need more Entropy practice, you can also practice Entropy practice problems.