Which of the substances below will have the greatest standard molar entropy? C4H10(g) C4H10(l) Xe(g) Which...

Question

Question

Which of the substances below will have the greatest standard molar entropy?

C₄H₁₀(g)
C₄H₁₀(l)
Xe(g)

Which of the substances below will have the greatest standard molar entropy?

C₄H₁₀(g)
C₄H₁₀(l)
Xe(g)

	C₄H₁₀(g), because it is a gas and as such has translational, rotational, and vibrational modes, allowing for greater energy dispersal
	C₄H₁₀(l), because it is a liquid, so the molecules are in close contact with one another, making the dispersal of energy more efficient
	Xe, because it has the greatest molar mass
	C₄H₁₀(g) and C₄H₁₀(l) will have the same, greatest, standard molar entropy because they have the same molar mass and molecular complexity.

Answer 1

Answer #1

C₄H₁₀(g), because it is a gas and as such has translational, rotational, and vibrational modes, allowing for greater energy dispersal

Answer 2

Answer #2

Butane in liquid state -- Standard molar entropy 229.7 J/(mol K)

Butane in gas state -- Standard molar entropy 310.23 J/(mol K)

Xe in gas state -- Standard molar entropy 169.7 J K^-1mol^-1

So highest Standard molar entropy will be for Butane in gas state, so option 1 will be correct

Kindly rate it and ask in case of doubts. :)

Answer 3

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