What does one mean by exothermic and endothermic reactions? Give examples.
Answers
Exothermic reactions:
Reactions in which heat energy is released are called as exothermic reactions e.g.respiration and combustion.
When quick lime(CaO) is added to water calcuim hydroxide is formed with the evolution of large amounts of heat
CaO + H2O======>Ca(OH)2 + heat
Endothermic reactions:
Reactions in which heat energy is absorbed are known as endothermic reactions.
e.g .Themal Decomposition reactions
When Iron sulphate is heated it forms iron oxide with the evolution of gases which have pungent smell(Sulphur Dioxide and Sulphur Trioxide)
FeSO4 + heat======>Fe2O3+ SO2 + SO3
I hope it helps you!!!
Answer:
BTS
BTSplease mark me as brainliest
BTSplease mark me as brainliestExothermic reactions : Those reactions in which heat is evolved are known as exothermic reactions. An exothermic reaction is indicated by writing “+ Heat”on the products side of an equation.
BTSplease mark me as brainliestExothermic reactions : Those reactions in which heat is evolved are known as exothermic reactions. An exothermic reaction is indicated by writing “+ Heat”on the products side of an equation.Example :
BTSplease mark me as brainliestExothermic reactions : Those reactions in which heat is evolved are known as exothermic reactions. An exothermic reaction is indicated by writing “+ Heat”on the products side of an equation.Example :(i) C (s) + O2 (g) → CO2 (g) + Heat
BTSplease mark me as brainliestExothermic reactions : Those reactions in which heat is evolved are known as exothermic reactions. An exothermic reaction is indicated by writing “+ Heat”on the products side of an equation.Example :(i) C (s) + O2 (g) → CO2 (g) + Heat(ii) N2 (g) + 3H2 (g) → 2NH3 (g) + Heat
BTSplease mark me as brainliestExothermic reactions : Those reactions in which heat is evolved are known as exothermic reactions. An exothermic reaction is indicated by writing “+ Heat”on the products side of an equation.Example :(i) C (s) + O2 (g) → CO2 (g) + Heat(ii) N2 (g) + 3H2 (g) → 2NH3 (g) + HeatEndothermic reactions : Those reactions in which heat is absorbed are known as endothermic reactions. An endothermic reaction is usually indicated by writing “Heat” on the product side of a chemical equation.
BTSplease mark me as brainliestExothermic reactions : Those reactions in which heat is evolved are known as exothermic reactions. An exothermic reaction is indicated by writing “+ Heat”on the products side of an equation.Example :(i) C (s) + O2 (g) → CO2 (g) + Heat(ii) N2 (g) + 3H2 (g) → 2NH3 (g) + HeatEndothermic reactions : Those reactions in which heat is absorbed are known as endothermic reactions. An endothermic reaction is usually indicated by writing “Heat” on the product side of a chemical equation.Examples :
BTSplease mark me as brainliestExothermic reactions : Those reactions in which heat is evolved are known as exothermic reactions. An exothermic reaction is indicated by writing “+ Heat”on the products side of an equation.Example :(i) C (s) + O2 (g) → CO2 (g) + Heat(ii) N2 (g) + 3H2 (g) → 2NH3 (g) + HeatEndothermic reactions : Those reactions in which heat is absorbed are known as endothermic reactions. An endothermic reaction is usually indicated by writing “Heat” on the product side of a chemical equation.Examples :(i) C (s) + 2S (s) → CS2 (l) – Heat
BTSplease mark me as brainliestExothermic reactions : Those reactions in which heat is evolved are known as exothermic reactions. An exothermic reaction is indicated by writing “+ Heat”on the products side of an equation.Example :(i) C (s) + O2 (g) → CO2 (g) + Heat(ii) N2 (g) + 3H2 (g) → 2NH3 (g) + HeatEndothermic reactions : Those reactions in which heat is absorbed are known as endothermic reactions. An endothermic reaction is usually indicated by writing “Heat” on the product side of a chemical equation.Examples :(i) C (s) + 2S (s) → CS2 (l) – Heat(ii) N2 (g) + O2 (g) → 2NO(g) – Heat