mention any two exothermic reactions.
Answers
Answer :
Exothermic reactions are reactions that release energy into the environment in the form of heat. Exothermic reactions feel warm or hot or may even be explosive.
More energy is released making chemical bonds than is used breaking them. In an exothermic reaction, the enthalpy change has a negative value: ΔH < 0
Terms Related To Exothermic Reaction
Exergonic Reaction – A reaction that releases energy in any form (e.g., light, sound, heat). An exothermic reaction is a type of exergonic reaction.
Endothermic Reaction – An endothermic reaction is the opposite of an exothermic reaction. Heat is absorbed in an endothermic reaction. In an exothermic reaction, the enthalpy change has a positive value: ΔH > 0
Exothermic reactions may be written as chemical reactions. Exothermic processes may be written in reaction format, but are more general and often include a combination of chemical reactions or involve nuclear reactions. Here are examples of exothermic reactions and processes:
Examples of Exothermic Reactions
any combustion reaction
a neutralization reaction
rusting of iron (rust steel wool with vinegar)
the thermite reaction
reaction between water and calcium chloride
reaction between sodium sulfite and bleach (dilute sodium hypochlorite)
reaction between sodium and chlorine to make sodium chloride (table salt)
reaction between water and any strong acid
reaction between water and any anhydrous salt
dissolving laundry detergent in water
adding water to anhydrous copper(II) sulfate
crystallization of sodium acetate or “hot ice” (try the demonstration)
freezing water into ice cubes
snow forming inside clouds
respiration
rain forming from water vapor in clouds
formation of ion pairs
making a gas molecule from atoms
burning sugar
dehydrating sugar with sulfuric acid
a burning candle
nuclear fission
Answer:
two exothermic reaction are :
