Which reaction occurs with a decrease in entropy? | Thermodynamics

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ThermodynamicsMCQ

Question

Which reaction occurs with a decrease in entropy?

N₂(g) + O₂(g) r 2NO(g)

N₂O₄(g) r 2NO₂(g)

2CO(g) r C(s) + CO₂(g)

✓ Correct

2HCl(aq) + Ag₂CO₃(s) r 2AgCl(s) + CO₂(g) + H₂O(l)

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