2003
Chemistry
JAMB
Chlorine gas is prepared in the laboratory by
A.
Adding concentrated hydrochloric acid to solid manganese (IV) oxide
B.
Adding concentrated tetraoxosulphate (VI) acid to solid sodium chloride
C.
Dropping concentrated hydrochloric acid onto potassium tetraoxomanganate (VII) crystals
D.
Oxidizing concentrated hydrochloric acid using potassium heptaoxodichromate (VI) crystals
Correct Answer: Adding concentrated hydrochloric acid to solid manganese (IV) oxide
Explanation
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