Explain why the carbon cannot reduce the oxides of Na or Mg?
Oxides of Na or Mg cannot be reduced by Carbon
Hence, due to the lower reactivity of carbon, in the reactivity series, carbon is unable to reduce the oxides of Na and Mg.
Question 61 Explain the following: (a) Reactivity of Al decreases if it is dipped in HNO3. (b) Carbon cannot reduce the oxides of Na or Mg. (c) NaCl is not a conductor of electricity in the solid state whereas it does conducts electricity in aqueous solution as well as in molten state. (d) Iron articles are galvanised. (e) Metals like Na, K, Ca and Mg are never found in their free state in nature.
Explain with reasons:
(a) In the electrolytic reduction of alumina, the graphite anode is gradually consumed.
or
Why the anode has to be replaced in this process?
(b) Roasting is carried out on sulphide ores and not on carbonate ores.
(c) Carbon can reduce lead oxide but not aluminium oxide.
(d) Electrolytic reduction is done to obtain aluminium?
(e) Why 'the food containing iron salts' should not be cooked in aluminium utensils?
state reason why carbon is not used to reduce oxides of sodium or aluminium