Q. 304.5( 13 Votes )
What is a decomposition reaction? Give an example of a decomposition reaction. Describe an activity to illustrate such a reaction by heating.
Cacium carbonate decomposes when heated into calcium oxide and carbon dioxide.
Activity: Potassium chlorate decomposes to give Potassium chloride and oxygen, when heated in presence of catalyst manganese dioxide.
Potassium Chlorate a single compound, is splitting up into two simpler substances, potassium Chloride and oxygen. This decomposition reaction is used to prepare oxygen gas in laboratory.
Rate this question :
Which among the following statement(s) is(are) true? Exposure of silver chloride to sunlight for a long duration turns grey due to:
(i) The formation of silver by decomposition of silver chloride
(ii) Sublimation of silver chloride
(iii) Decomposition of chlorine gas from silver chloride
(iv) Oxidation of silver chlorideEvergreen Science
Which of the following are exothermic processes?
(i) Reaction of water with quicklime
(ii) Dilution of an acid
(iii) Evaporation of water
(iv) Sublimation of camphor (crystals)Evergreen Science
(b)Lakhmir Singh & Manjit Kaur - Chemistry