Endothermic reactions
An An endothermic reaction takes in heat. reaction takes in energy from its surroundings. The temperature of its surroundings decreases.
The reaction between sodium hydroxide and hydrochloric acid is exothermic.
The reaction between sodium carbonate and ethanoic acid is endothermic.
An exothermic reaction between dilute sodium hydroxide and hydrochloric acid.
Image caption, 1. Sodium hydroxide solution is poured into a beaker of hydrochloric acid. Inside is a thermometer showing room temperature.
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