what are exothermic and endothermic reaction give example
Answers
Answer:
An exothermic reaction is a "reaction for which the overall standard enthalpy change ΔH⚬ is negative."[1][2] Exothermic reactions usually release heat and entail the replacement of weak bonds with stronger ones.[3][4] The term is often confused with exergonic reaction, which IUPAC defines as "... a reaction for which the overall standard Gibbs energy change ΔG⚬ is negative."[2] A strongly exothermic reaction will usually also be exergonic because ΔH⚬ makes a major contribution to ΔG⚬.
Answer:
exothermic reaction :the reaction in which heat is liberated is called exothermic reaction.
ex:CH2+2O2=CO2+2H2O+heat
endothermic reaction :in an endothermic reaction, energy is taken from the surroundings. the surroundings then have less energy then they started with, so temperature falls.
ex:melting of ice cubes and melting of solid cubes