Chemistry
JAMB 1994
From the above diagram; The caustic soda in the conical flask serves to
-
A.
dry ethene gas
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B.
remove carbon (iv) oxides from ethene
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C.
remove carbon (ii) oxide from ethene
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D.
remove sulphur (iv) oxide from ethene
Correct Answer: Option B
Explanation
Caustic soda, \(NaOH\) , serves to remove gaseous impurities from the gas evolved during the laboratory preparation of ethene. Basically, the major impurities are Sulphur (IV) oxide and Carbon (IV) oxide.
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