Hydrochloric acid is added to aqueous sodium hydroxide.
The temperature change of the sodium hydroxide solution before and after mixing is measured and shows that thermal energy is given out.
Which row describes the type of reaction and the temperature change of the solution for this reaction?
1 )
type of reaction: endothermic / temperature change: decrease
2 )
type of reaction: endothermic / temperature change: increase
3 )
type of reaction: exothermic / temperature change: decrease
type of reaction: exothermic / temperature change: increase
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