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Question
Complete and balance the equation:
[General method]
Reactions of metals with dilute acids
Iron - Fe + 2HCl → ______ + _______ [g]
Solution
Iron - Fe + 2HCl → FeCl2 + H2 [g]
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Hydrogen reacts with metal oxides to form ............and....................
Multiple Choice Question
Water gas is a mixture of
How did the name 'hydrogen' originate?
Why are the following metal not used in the lab. preparation of hydrogen?
iron
Correct the following statement:
Hydrogen is separated from CO by passing the mixture through caustic potash solution.
Select the correct options for the following statement:
A metal which reacts with water to give a metallic hydroxide & liberate hydrogen.
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 active metals - cold water
Calcium - Ca + H2O → ______+ _______ [g]
How did the name ‘hydrogen’ originate? How does hydrogen occur in the combined state?
State why hydrogen is not prepared in the laboratory by the action of sodium with cold water.
