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
jamb 1994chemistry

The correct answer is B. remove carbon (iv) oxides from ethene

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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