The following reaction is an example of a :
CH4 +2 O2 → CO2 + 2H2O + Heat
Answers
Explanation:
exothermic reaction because heat is evolved
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Explanation:
Types of reaction
1. CH_4+2O_2\rightarrow CO_2+ 2H_2OCH
4
+2O
2
→CO
2
+2H
2
O
When hydrocarbon reacts with oxygen and yields product such as carbon dioxide and water, such type of reaction is called a combustion reaction.
As in the given equation, hydrocarbon CH_4CH
4
reacts with oxygen, it is identified as combustion reaction.
2. PbNO_3+2KI\rightarrow PbI_2+2KNO_3PbNO
3
+2KI→PbI
2
+2KNO
3
The type of reaction in which two ionic compounds exchange their cation or anion and lead to the formation of new product, such type of reaction is called as double displacement reaction.
As in the given reaction, ionic compounds such as PbNO_3 and KIPbNO
3
andKI are exchanging their ions and yielding a product, it is identified as double displacement reaction.
3. CaO+H_2O\rightarrow Ca(OH)_2CaO+H
2
O→Ca(OH)
2
The type of reaction in which reactants combines with one another and yields product as well as heat, it is called as exothermic combination reaction.
As in the given reaction, reactant such as calcium oxide and water combines with each other and forms calcium hydroxide it is identified combination reaction.
As this formation releases heat it is considered as exothermic combination reaction.
4. CuSO_4 + Zn\rightarrow ZnSO_4+CuCuSO
4
+Zn→ZnSO
4
+Cu
The type of reaction in which reactants replaces one another and leads to the formation of product, it is called as displacement reaction.
As in the given reaction, the 'Cu' in CuSO_4CuSO
4
is displaced by Zn, it is identified as displacement reaction.