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प्रश्न
How is the following metallic oxide reduced? Write equations:
Iron (ll) oxide
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उत्तर
Iron is a moderately reactive metal; its oxide is reduced by Carbon Reduction Process.
\[\ce{FeO + CO ->[750-500^\circ C] Fe + CO2}\]
\[\ce{4FeO + O2 -> 2Fe2O3}\]
\[\ce{Fe2O3 + 3CO ->[600^\circ C-400^\circ C]2Fe + 3CO2}\]
संबंधित प्रश्न
Give appropriate scientific reasons for Zinc oxide can be reduced to zinc metal by using
carbon, but aluminium oxide cannot be reduced by a reducing agent
For the reaction of a metal oxide. Suggest a reducing agent other than carbon
Give the chemical name and formula of 'cryolite'
Name a non-metallic element which is a conductor of electricity.
Write balanced equation for the following reaction:
Reduction of iron (III) oxide by carbon monoxide.
4 tones of bauxite, 150 Kg of sodium hydroxide and 600 Kg of graphite.
The aluminium compound in bauxite is aluminium oxide and the main impurity is iron (II) oxide. Aluminium is obtained by the electrolysis of aluminium oxide dissolved in cryolite.
(a) When bauxite is treated with sodium hydroxide solution, what happens to:
(i) the aluminium oxide?
(ii) The iron (III) oxide?
In order to obtain one tone of aluminium, the following inputs are required:
4 tones of bauxite, 150 Kg of sodium hydroxide and 600 Kg of graphite.
The aluminium compound in bauxite is aluminium oxide and the main impurity is iron (II) oxide. Aluminium is obtained by the electrolysis of aluminium oxide dissolved in cryolite.
(i) Write the formula of cryolite.
(ii) Write down the word which correctly completes the following sentence.
"By dissolving aluminium oxide in cryolite, a ______ (conducting / non- conducting) solution is produced.
(iii) Why so much graphite required for this electrolytic process.
(iv) Write the equation for the reaction which takes place at cathode.
Write the observation for the following:
A paper dipped in potassium permanganate solution is put on the mouth of a test tube containing sulphur dioxide gas.
Give the equation for the reduction of Iron (III) oxide.
Give the equations for the reduction of Lead (II) oxide.
