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(ii) Iron can reduce alumina to aluminiu...

(ii) Iron can reduce alumina to aluminium metal.

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To determine whether iron can reduce alumina (Al₂O₃) to aluminum metal, we can follow these steps: ### Step 1: Understand the Reduction Process Reduction is a chemical process where a substance gains electrons or decreases its oxidation state. In this context, we are looking at whether iron (Fe) can reduce alumina (Al₂O₃) to aluminum (Al). ### Step 2: Refer to the Ellingham Diagram The Ellingham diagram is a graphical representation of the standard Gibbs free energy change (ΔG°) for various reactions, particularly those involving the formation of oxides. It helps us understand the stability of metal oxides and their ability to be reduced. ...
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The following is an extract from 'Metals in the Service of Man, Alexander and Street/Pelican 1976. 'Alumina (aluminium oxide) has a very high melting point of over 2000^@ C so that it cannot readily be liquefied. However, conversion of alumina to aluminium and oxygen, by electrolysis, can occur when it is dissolved in some other substance : The aluminium oxide for the electrolytic extraction of aluminium is obtained by heating aluminium hydroxide. Write the equation for this reaction.

The following is an extract from 'Metals in the Service of Man, Alexander and Street/Pelican 1976. 'Alumina (aluminium oxide) has a very high melting point of over 2000^@ C so that it cannot readily be liquefied. However, conversion of alumina to aluminium and oxygen, by electrolysis, can occur when it is dissolved in some other substance : Write the equation for the reaction that occurs at the cathode during the extraction of aluminium by electrolysis.

CENGAGE CHEMISTRY ENGLISH-GENERAL PRINCIPLES AND PROCESS OF ISOLATION OF ELEMENTS-Exs 1.1 (True Orfalse Statement)
  1. True or false statements : (i) Sodium cyanide is used as a depresent...

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  2. (ii) Iron can reduce alumina to aluminium metal.

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  3. (iii) Substances which convert infusible impurities present in ores in...

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  4. (iv) Zirconium is best refined by zonc refining method.

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  5. (v) Impurties are more soluble in the melt than in the solid state of ...

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  6. (vi) In Bessenmerisation of sulphide ore of copper, there is self-redu...

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  7. (vii) Mercury is transported on containers made of iron.

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  8. (viii)The ore CuFeS(2) is used to extract iron metal.

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  9. (ix) It is possible to extract a metal from its oxide it the free ener...

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  10. Fill in the blanks : (a) Pig iron in manufactured by using furnace.

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  11. (b) Platinum, indium etc. are known as noble metals because they are t...

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  12. ( c) iron is the purest form of iron.

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  13. (d) Passivity of iron is due to the formation of thin film of on its s...

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  14. ( e) Phenimenon of removing layers of basic oxides from metals before ...

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  15. In the manufacture of iron from hematite, limestone is added to act as...

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  16. (g) An ore of tin containing FeCrO(4) is concentrated by .

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  17. (h) In froth process, the ore particles float because their surface is...

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  18. Coating of zinc on iron objects is commonly known as .

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  19. In electrorefining the impure metal is made

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