13.9 g of NACl dissovled in 200. g of water. the temperature of the water fall from 22.0 degrees celsius to 19.7 degrees celsius over 6.7 mins. Is this reaction exothermic, endothermic, or neither?

Answer 1

The reaction is ENDOTHERMIC. An endothermic reaction absorbs heat from the surroundings and so the temperature decreases. In an exothermic reaction, heat is given off to the surroundings and the temperature increases.