Which of the following is true about the surface of silica gel used for chromato

Question

Which of the following is true about the surface of silica gel used for chromatographic separations? It is non-polar b. It is strongly acidic It is polar d. It is strongly basic Which of the following is characteristic of a typical phase transfer catalyst? able to absorb hydrogen on a carbon surface shares structural features of both ionic and non-polar compounds usually a transition metal such as Pd or Pt two of the above Which is the best method to separate an undissolved solid from water? Gravity filtration Rotary evaporation Vacuum filtration Silica gel chromatography

Explanation / Answer

(4) (c) Polar substance

(5) (d) They share structural features of both ionic and nonpolar compounds. Transition metal such as Pt 0r Pd are used as phase transition catalysts.

(6) (a) Gravity filtration

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