Laboratory preparation of Hydrogen Gas
Hydrogen gas is prepared in laboratory by the action of dilute HCl upon granulated zinc.
$$\ce{Zn + dil. H2SO4->ZnSO4 (aq) + H2 ^ }$$
Procedure:
The granulated zinc pieces are taken in a Woulfe’s bottle and the apparatus is fitted as shown in figure. The two necks of woulfe’s bottle is tighten up with cork so that no air enters from outside. It is connected with the delivery tube to a water trough containing water. Dilute sulphuric acid is poured slowly from the thistle funnel. Some crystals of copper sulphate are added to increase the rate of reaction. The hydrogen gas thus formed is collected in a gas jar through delivery tube by the downward displacement of water.
Laboratory preparation of Hydogen gas
Purification: The hydrogen gas thus obtained may contain different impurities like H2S, NO2, CO2, moisture etc. So, these impurities are removed by using suitable process to get pure hydrogen.
Very pure hydrogen gas can be prepared in lab by the following reaction. This is a short and sweet method.
$$\ce{Mg + dil. H2SO4->MgSO4 + H2 ^ }$$
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24 Responses to “Laboratory preparation of Hydrogen Gas”
why sometimes a little amount of sulphuric acid is added during laboratory preparation of hydrogen?
so that the reaction could happen at a speeder rate hha yewena
Why is this that hydrogen itself cannot prepare in the lab alone? What i need to know is preparation of hydrogen in the laboratory
How to prepair hydrogen and oxygen
lab preparation of hydrogen gas and study its properties.
why is it more favorable to use hydrogen peroxide instead of potassium chlorate in the preparation of oxygen in the laboratory?
can you send stapes
they are sure good and helped me with my research
ekse yekela kusichaphata
what is sulphuric reaction or redox reaction?
manje ke unani
how to prepare sulphur in a labolatory
Enter your thoughts,comments,questions etc..why we are using granulete zink and not pure zink
It is to write a project or notes
How can we remove those impurities?
observation made when hydrogen gas passed over copper 2oxide in the combustion tube
what is uses of oxygen and hydrogen
Oxygen, is used in welding
Used in rocket
Used in rusting
HYDROGEN
Oxy hydrogen flame
Manufacture of hydrochloric acid
What is test of hydrogen
Group discussion
Simpler procedure of preparing hydrogen
Simpler procedures of preparing hydrogen
Why always i see the diagram same in both preparation of oxygen without heat and hydroge…
Neverthless i dont find Woulfle’s bottle in the diagram
Why always i see the diagram same in both preparation of oxygen without heat and hydroge…
Neverthless, i dont find Woulfle’s bottle in the diagram…only names r changed….