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WAEC SSCE - Chemistry - 2000 (Objective)

Question 1 Report

C8H18 will undergo the following reactions except
Answer Details
C8H18 is a hydrocarbon, which means it consists of hydrogen and carbon atoms only.
(i) Cracking: It is a process of breaking down larger hydrocarbons into smaller hydrocarbons. C8H18 can undergo cracking, which means it can break down into smaller hydrocarbons.
(ii) Combustion: It is a reaction between a substance and oxygen in the presence of a flame or spark. C8H18 can undergo combustion and produce carbon dioxide and water.
(iii) Substitution: It is a reaction in which an atom or group of atoms is replaced by another atom or group of atoms. C8H18 can undergo substitution if it reacts with a suitable reagent.
(iv) Addition: It is a reaction in which two or more reactants combine to form a larger product. C8H18 can undergo addition if it reacts with a suitable reagent.
Therefore, C8H18 can undergo all of the above reactions. So, the answer is None.
Read lesson note on Chemistry Of Carbon Compounds (Nigeria Only) (WAEC)
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