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Enthalpy and entropy

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Question 8

The table below shows standard entropies, S⊖S^\ominusS⊖.

SubstanceN2O4(g)\text{N}_2\text{O}_4(\text{g})N2​O4​(g)NO2(g)\text{NO}_2(\text{g})NO2​(g)
S⊖ / J mol−1K−1S^\ominus\text{ / J mol}^{-1}\text{K}^{-1}S⊖ / J mol−1K−1304.3240.1

What is the entropy change, ΔS⊖\Delta S^\ominusΔS⊖, in J mol−1K−1\text{J mol}^{-1}\text{K}^{-1}J mol−1K−1, for the following reaction?

N2O4(g)→2NO2(g) \text{N}_2\text{O}_4(\text{g}) \rightarrow 2\text{NO}_2(\text{g}) N2​O4​(g)→2NO2​(g)

−175.9-175.9−175.9

−64.2-64.2−64.2

+64.2+64.2+64.2

+175.9+175.9+175.9

Enthalpy and entropy Questions

  1. A Level
  2. /Chemistry
  3. /Enthalpy and entropy