Which of the following reactions are always exothermic? 1. Neutralization Il. Decomposition III. Combustion
- I and II only
-
I and III only
- II and IIl only
- I, II and III
The correct answer is: B
Explanation
- LIST OF EXOTHERMIC REACTIONS
- any combustion reaction.
- a neutralization reaction.
- rusting of iron (rust steel wool with vinegar)
- the thermit reaction.
- reaction between water and calcium chloride.
- reaction between sodium sulfite and bleach (dilute sodium hypochlorite)
- reaction between potassium permanganate and glycerol.