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प्रश्न
Complete and balance the following reaction.
Zn + H2O →_____________ +___________
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उत्तर
Zn + H2O → ZnO + H2
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संबंधित प्रश्न
Which metal is preferred for the preparation of hydrogen?
from water?
Complete the following word equation:
Sodium hydroxide + zinc → hydrogen + _________
Complete and balance the following reaction.
Na + H2O →_____________ +___________
Complete and balance the following reaction.
Ca + H2O →_____________ +___________
Complete and balance the following reaction.
Fe + H2O →_____________ +___________
Complete and balance the following reaction.
Fe + HCl →_____________ +___________
State how hydrogen occurs in the free state. Name three compounds containing hydrogen in the combined state.
‘Hydrogen is obtained by electrolysis of acidified water’.
Answer the following pertaining to the preparation of hydrogen by electrolysis,
Name the electrode –
- through which the current enters the electrolyte.
- at which hydrogen is liberated.
Complete and balance the equation:
[General method]
Reactions of metals with dilute acids
Iron - Fe + 2HCl → ______ + _______ [g]
Select the correct answer to the reactant added, to give the product in the preparation of hydrogen gas.
\[\ce{Fe3O4 + H2}\]
