From the above diagram, the caustic soda in the conical flask serves to
A.
dry ethene gas
B.
remove carbon (iv) oxides from ethene
C.
remove carbon (ii) oxide from ethene
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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