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Question
Starting from hydrogen gas how would you obtain a metal by reduction of its heated oxide.
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Solution
Reduction of Fe2O3 (iron oxide) on heating to metal iron.
\[\ce{Fe2O3 + 3H2 ->\underset{\text{Reduced to metal}}{2Fe} + 3H2O}\]
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RELATED QUESTIONS
MULTIPLE CHOICE QUESTIONS
Hydrogen burns in oxygen to form
- hydrogen sulphide
- nitrates
- water
- ammonia
MATCH THE COLUMNS
| column A | column B |
| 1. `""2H_2 + O_2 → 2H_2O` | A. This reaction is not possible |
| 2. `""H_2+CI_2 →2HCI` | B.This reaction is exothermic to the extent of explosion |
| 3.`""ZaO+ H^2→Zn +H_2O` | C.This reaction is known as Haber process |
| 4.`""Cu + H_2SO^4 → CuSO_4 + H_2 ` | D.This reaction illustrates the reducing property of bydrogen |
| 5.`""N_2 +3H_2 → 2NH_3 +heat ` | E. This reaction takes place in diffused sunlight |
| F. This reaction is a method of preparation of hydrogen |
For laboratory preparation of hydrogen, give the following:
materials used
Why hot concentrated sulphuric acid is not used in the preparation of hydrogen?
How did the name 'hydrogen' originate?
Starting from hydrogen gas how would you obtain a basic gas.
Give reason for the following:
In the preparation of hydrogen by electrolysis of water – the distilled water used is acidified.
On heating which of the following substances i.e. copper carbonate, zinc carbonate, washing soda, copper sulphate, zinc nitrate, copper nitrate, lead nitrate, ammonium chloride and ammonium dichromate – relate to the reaction given below.
An efflorescent substance which leaves a residue having the same colour as the substance and evolves a gas which changes the colour of cobalt chloride paper.
Complete and balance the equation:
[General method]
Reactions of metals with steam
Iron - 3Fe + 4H2O ⇌ ______+ _______ [g]
Select the correct answer to the reactant added, to give the product in the preparation of hydrogen gas.
\[\ce{Al2(SO4)3 + H2}\]
