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What is the role of cryolite in the meta...

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

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The roles of cryolite in the metallurgy of aluminium are as follows:
a. It makes alumina a good conductor of electricity.
b. It lowers the fusion (melting point) temperature of alumina from 2223K to about 1140K.
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CENGAGE CHEMISTRY-APPENDIX INORGANIC VOLUME 2-Exercises
  1. Differentiate between minerals and ores.

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

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

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

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

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

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

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

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

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

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

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

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

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  14. Why does NH3 form hydrogen bond but PH3 does not?

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  15. How is nitrogen prepared in the laboratory? Write the chemical equatio...

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  16. How is ammonia manufactured industrially?

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  17. Illustrate how copper metal can give different product on reaction wit...

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  18. Give the resonating structures of NO2 and N2O5.

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  19. The HNH angle value is higher than HPH, HAsH and HSbH angles. Why?

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  20. Why does R3P=0 exist but R3N=0 does not (R= alkyl group)?

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