The entropy change, so the appropriate sign is negative. -286.23 J/K (decrease in entropy) Non-spontaneous process.
Entropy is a systematic idea in addition to measurable physical belongings that is most normally associated with a country of ailment, randomness, or uncertainty.
A result of entropy is that certain processes are irreversible or impossible, apart from the requirement of now not violating the conservation of electricity, the latter being expressed inside the first regulation of thermodynamics. Entropy is valuable to the second regulation of thermodynamics.
ENTROPY CHANGE = ENTROPY OF PRODUCT - ENTROPY OF REACTANT
ΔS = ΣΔSf(product) - ΣΔSf(reactant)
1. At STP
[2ΔSf(HNO3 (aq)) + 1ΔSf(NO (g))] - [3ΔSf(NO2 (g)) + 1ΔSf(H2O (ℓ))]
ΔSf(HNO3 (aq) = 146.44 J/K
ΔSf(NO (g) = 210.65 J/K
ΔSf(NO2 (g) = 239.95 J/K
ΔSf(H2O (ℓ) = 69.91 J/K
2(146.44) + 1(210.65)] - [3(239.95) + 1(69.91)] = -286.23 J/K
-286.23 J/K (decrease in entropy)
Non-spontaneous process.
Learn more about entropy here:-brainly.com/question/419265
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