Chemistry

Give reasons for the following:
Oxides or halides of highly electropositive metals e.g. K, Na, Ca, Al are reduced to metals by electrolysis and not by reduction with coke.

Metallurgy

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Answer

Metals from K to Al, are most electropositive, have strong affinity for oxygen hence, they cannot be reduced by reducing agents like coke. They can be reduced by electrolysis only.

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Chemistry

Give reasons for the following:
Oxides or halides of highly electropositive metals e.g. K, Na, Ca, Al are reduced to metals by electrolysis and not by reduction with coke.

Metallurgy

Answer

Related Questions

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In the extraction of aluminium from bauxite, the first step is the dressing of the ore by Baeyer's process. Give balanced equations for the conversion of impure bauxite to pure alumina using a concentrated solution of NaOH.

Chemistry

Give reasons for the following:Oxides or halides of highly electropositive metals e.g. K, Na, Ca, Al are reduced to metals by electrolysis and not by reduction with coke.

Metallurgy

Answer

Related Questions

Give reasons for the following:Roasting the ore generally results in evolution of sulphur dioxide gas, while calcination of the ore evolves carbon dioxide gas.

Give reasons for the following:Reduction of metallic oxides to metal in the extraction of metals from the ores is based on the position of the metal in the activity series.

Give reasons for the following:Coke is not preferred as a reducing agent in the reduction of the oxide of mercury to it's metal, but is preferred in the reduction of the oxide of zinc to it's metal.

In the extraction of aluminium from bauxite, the first step is the dressing of the ore by Baeyer's process. Give balanced equations for the conversion of impure bauxite to pure alumina using a concentrated solution of NaOH.

Give reasons for the following:
Oxides or halides of highly electropositive metals e.g. K, Na, Ca, Al are reduced to metals by electrolysis and not by reduction with coke.

Give reasons for the following:
Roasting the ore generally results in evolution of sulphur dioxide gas, while calcination of the ore evolves carbon dioxide gas.

Give reasons for the following:
Reduction of metallic oxides to metal in the extraction of metals from the ores is based on the position of the metal in the activity series.

Give reasons for the following:
Coke is not preferred as a reducing agent in the reduction of the oxide of mercury to it's metal, but is preferred in the reduction of the oxide of zinc to it's metal.