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AP EAMCET2005Chemistryp Block Elements (Group 15, 16, 17 & 18)

In Fischer-Ringe's method of separation of nobles gas mixture from air ............. is used

Options

  1. A90 % CaC ₂+10 % CaCl ₂
  2. Bcoconut charcoal
  3. Csoda lime + potash solution
  4. D90 % CaCO ₃+10 % urea

Correct answer

A. 90 % CaC ₂+10 % CaCl ₂

Step-by-step solution

In Fischer Ringe's method, air free from moisture and CO ₂ is passed over a heated mixture (800^ C ) of 90 % CaC ₂+10 % CaCl ₂ in an iron tube, when following reactions take place aligned & CaC ₂+ N ₂ 800^ C CaCN ₂+ C & 2 C + O 2 CO & C + O ₂ CO ₂ & 2 CaC ₂+3 CO ₂ 2 CaCO ₃+5 C & CuO + CO Cu + CO ₂ aligned CO ₂ gas is now absorbed by KOH solution. Thus a mixture of inert gases is obtained.

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