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What criterion is followed for the selec...

What criterion is followed for the selectrion of the stationary phase in chromatography?

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The stationary plase is selected in such a way that the impurities are more strongly adsorbed on the stationary phase than element to be purified. Under these conditions, when the clumn is extracted, the impurities will be raetained by the stationary phase while the pure component is easily eluted.
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CENGAGE CHEMISTRY-APPENDIX INORGANIC VOLUME 2-Exercises
  1. State the role of silica in the metallurgy of copper.

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  2. What is meant by the term "chromatography"?

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  3. What criterion is followed for the selectrion of the stationary phase ...

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  4. Describe a method for refining nickel.

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  5. How can you separate alumina from silica in a bauxite ore associated w...

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  6. Giving examples differentiate between roasting and calcination.

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  7. How is cast iron different from pig iron?

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  8. Differentiate between minerals and ores.

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  9. Why copper matte is put in silica lined converter?

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  10. What is the role of cryolite in the metallurgy of aluminium?

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  11. How is leaching carried out in case of low grade copper ores?

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  12. Why is zinc not extracted from zinc oxide through reduction using CO?

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  13. The value of triangle(f)G^(ɵ)(Cr2O3)=-540kJmol^-1 and triangle(f)G^(ɵ)...

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  14. Out of C and CO, which is a better reducing agent at 673K?

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  15. The choice of a reducing agent in a particular case depends on thermod...

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  16. What is the role of graphite rod in the electrometallurgy of aluminium...

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  17. Outline the principles of refining of metals by the following methods ...

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  18. Predict conditions under which Al might be expected to reduce MgO.

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  19. Why does the reactivity of nitrogen differ from phosphorus?

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  20. Discuss the trends in chemical reactivity of group 15 elements.

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