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प्रश्न
Complete and balance the equation:
[General method]
Reactions of active metals - cold water
Potassium- K + H2O → ______+ ______ [g]
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उत्तर
\[\ce{2K + 2H2O -> 2KOH + H2}\] [g]
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संबंधित प्रश्न
Multiple Choice Question
The metal which reacts with cold water to produce hydrogen is
Why are the following metals not used in the lab preparation of hydrogen?
calcium
Complete and balance the following reaction.
Zn + HCl →_____________ +___________
Correct the following statement:
Hydrogen is separated from CO by passing the mixture through caustic potash solution.
‘Hydrogen is obtained by electrolysis of acidified water’.
Answer the following pertaining to the preparation of hydrogen by electrolysis,
The meaning of the term ‘electrolysis’ and ‘electrolyte’.
Complete and balance the equation:
[General method]
Reactions of metals with dilute acids
Aluminium - 2Al + 3H2SO4 → ______+ _______ [g]
Give a balanced equation for obtaining hydrogen from?
Steam using a trivalent metal
State the reactant added to hydrogen to obtain the respective product in following case.
Ammonia
State the reactant added to hydrogen to obtain the respective product in following case.
Hydrogen chloride
Give a reason for the following.
Granulated zinc is preferred to metallic zinc in the preparation of hydrogen using dilute acid.
