JEE Main Chemistry question

Chemistry General Principles and Processes of Isolation of Elements (Metallurgy)JEE Main

Not in JEE Main or NEET syllabus

Which of the following is formed when aluminium oxide and carbon are strongly heated in dry chlorine gas?

(A)Aluminium chloride
(B)Hydrate Aluminium chloride
(C)Anhydrous Aluminium chlorideCorrect
(D)None of the above

Answer: (C)

Solution

Carbon acts as a reducing/oxygen-scavenging agent: Al_2O_3 + 3C + 3Cl_2 \xrightarrow{\Delta} 2AlCl_3 + 3CO; since the reaction is carried out in dry chlorine with no water

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Question ID VK-138359