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प्रश्न
State the condition and give balanced equation for the conversion of water gas to hydrogen – in the Bosch process.
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उत्तर
Conditions and balance equations for conversion of water gas to hydrogen
Water gas should be mixed with excess of steam, catalyst → Fe2O3 promoter → Cr2O3 at 450°C
\[\ce{[Co + H2] + \underset{\text{steam}}{H2O}->[Fe2O3 450°C][Cr2O3] CO2 + 2H2 +\triangle}\]
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........................... means ‘maker of water’ in Greek.
TRUE \ FALSE
Hydrogen does not combine with nitrogen under ordinary conditions.
Why nitric acid is not used in the preparation of hydrogen?
Give reason for the following:
The end of the thistle funnel should be dipped under acid.
Why are the following metal not used in the lab. preparation of hydrogen?
iron
Select the correct options for the following statement:
The metal used as a catalyst in hydrogenation of oils.
Complete and balance the equation:
[General method]
Reactions of active metals - cold water
Potassium- K + H2O → ______+ ______ [g]
Complete and balance the equation:
[General method]
Reactions of metals with steam
Magnesium - Mg + H2O → ______+ _______ [g]
Complete and balance the equation:
[General method]
Reactions of metals with dilute acids
Aluminium - 2Al + 3H2SO4 → ______+ _______ [g]
Name an element whsich reacts violently with water at room temperature.
