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Question
Complete and balance the equation:
[General method]
Reactions of metals with steam
Iron - 3Fe + 4H2O ⇌ ______+ _______ [g]
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Solution
Iron - 3Fe + 4H2O ⇌ Fe3O4+ 4H2 [g]
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Multiple Choice Question
The metal which reacts with cold water to produce hydrogen is
Which test should be made before collecting hydrogen in a gas jar?
Why are the following metals not used in the lab preparation of hydrogen?
calcium
Complete and balance the following reaction.
Ca + H2O →_____________ +___________
Complete and balance the following reaction.
Al + KOH + H2O→_____________ +___________
State how hydrogen occurs in the free state. Name three compounds containing hydrogen in the combined state.
Complete and balance the equation:
[General method]
Reactions of metals with dilute acids
Magnesium - Mg + 2HCl → ______+ _______ [g]
Complete and balance the equation:
[General method]
Reactions of metals - alkali [conc. soln.]
Zinc - Zn + 2NaOH → ______ + _______ [g]
Zn + 2KOH → ____ + _____ [g]
Select the correct answer to the reactant added, to give the product in the preparation of hydrogen gas.
\[\ce{NaAlO2 + H2}\]
