From the above diagram; The caustic soda in the conical f...
From the above diagram; The caustic soda in the conical flask serves to
dry ethene gas
remove carbon (iv) oxides from ethene
remove carbon (ii) oxide from ethene
remove sulphur (iv) oxide from ethene
Correct answer is B
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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