Chemistry / Endothermic & Exothermic Reactions
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Solution: How many of the following processes would be exothermic (ΔH ...

Question

How many of the following processes would be exothermic (ΔH < 0)?

HCl (g)  →  H (g) + Cl (g)

Br (g) + Br (g) → Br 2 (g)

KI (s) → K + (g) + l  - (g)

CO2 (g) → CO (g) + O (g)

 

a. 0

b. 1

c. 2

d. 3

e. 4