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AP EAMCET · Chemistry · Surface Chemistry

A mixture of three compounds \(A, B, C\) is passed through a column of \(\mathrm{Al}_2 \mathrm{O}_3\) by using alcohol as eluant. The order in which they are eluted out of the column is \(C, B, A\). Which of the following statement is true?

  1. A ' \(C\) ' is strongly adsorbed on the adsorbent
  2. B ' \(C\) ' is weakly adsorbed on the adsorbent
  3. C ' \(A\) ' is weakly adsorbed on the solvent
  4. D The order or elution does not depend on the extent of adsorption
Verified Solution

Answer & Solution

Correct Answer

(B) ' \(C\) ' is weakly adsorbed on the adsorbent

Step-by-step Solution

Detailed explanation

Since, compound \(C\) comes out before \(B . B\) is more readily adsorbed to the column and ' \(B\) ' comes out before \(A\). Hence, \(A\) is more readily adsorbed than \(B\). Hence, order of adsorption is \(A>B>C\). Hence, \(C\) is weakly adsorbed on the adsorbent. Thus, the…