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✴Question....➡Give three examples of exothermic and endothermic reaction.
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Some examples of exothermic processes are:
- Combustion of fuels such as wood, coal and oil petroleum
- Thermite reaction[failed verification]
- Reaction of alkali metals and other highly electropositive metals with water
- Condensation of rain from water vapor
- Mixing water and strong acids or strong bases
- Mixing acids and bases
- Dehydration of carbohydrates by sulfuric acid
- The setting of cement and concrete
- Some polymerisation reactions such as the setting of epoxy resin
- Reaction of most metals with halogens or oxygen
- Nuclear fusion in hydrogen bombs and in stellar cores (to iron)
- Nuclear fission of heavy elements
Some Examples of Endothermic Reaction are:
A good example of an endothermic reaction includes dissolving a salt. It doesn't have to be table salt, nor does the solvent need to be water.
- The reaction of barium hydroxide octahydrate crystals with dry ammonium chloride
- Dissolving ammonium chloride in water
- The reaction of thionyl chloride (SOCl2) with cobalt(II) sulfate heptahydrate
- Mixing water and ammonium nitrate
- Mixing water with potassium chloride
- Reacting ethanoic acid with sodium carbonate
- Photosynthesis (chlorophyll is used to react carbon dioxide plus water plus energy to make glucose and oxygen).
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