Q. Which of the following reactions is associated with the most negative change in entropy?

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A

$2 S O_{2} (g) + O_{2} (g) ⟶ 2 S O_{3} (g)$

5%

B

$C_{2} H_{4} (g) + H_{2} (g) ⟶ C_{2} H_{6} (g)$

14%

C

$C (s$ , graphite $) + O_{2} ⟶ C O_{2} (g)$

23%

D

$3 C_{2} H_{2} (g) ⟶ C_{6} H_{6} (g)$

58%

Solution:

$Δ n_{g}$ is most - ve