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What might you expect for the value of S∘ (entropy) for butane, C4H10?
Entropies provided (Hint: entropy increases with increasing molecular complexity):
- CH4=186.3(J/mol*K)
-C2H6=229.6(J/mol*K)
-C2H8=270.3(J/mol*K)

What might you expect for the value of S entropy for butane C4H10 Entropies provided Hint entropy increases with increasing molecular complexity CH41863JmolK C2 class=

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Answer:

340 J·K⁻¹mol⁻¹  

Explanation:

I looks like the standard entropy increases approximately linearly with the number of C atoms.

I plotted S° vs the number of C atoms and got the graph shown below.

It appears that S° for four carbon atoms should be about 340 J·K⁻¹mol⁻¹.·

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mahima6824soni

The expert for the value of S entropy for butane, C₄H₁₀ is 340 J·K⁻¹mol⁻¹.

What is entropy?

Entropy is a measured physical quality that is most usually linked with disorder, unpredictability, or uncertainty.

The entropy here is increasing with increase in number of carbon atom.

The formula for calculating entropy is S = Kb lnΩ

Thus, the value of S entropy for butane, C₄H₁₀ is 340 J·K⁻¹mol⁻¹.

Learn more about entropy

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