State the kind of chemical reactions in the following examples: |
(i) Digestion of food in stomach |
(ii) Combustion of coal in air |
(iii) Heating of limestone |
Answer:
(i) Digestion of food in stomach: During digestion, the complex food is broken into simpler form. Therefore, it is a type of decomposition reaction. (ii) Combustion of coal in air: During combustion the coal burns in air to form \[C{{O}_{2}},\text{ }{{H}_{2}}O\] along with the evolution of heat. Thus, it is a type of exothermic decomposition reaction. (iii) Heating of limestone: When limestone is heated strongly, it breaks into \[C{{O}_{2}}\] and lime. Thus it is a type of thermal decomposition reaction.
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