Advertisements
Advertisements
प्रश्न
Hydrogen may be prepared in the laboratory by the action of a metal on an acid.
How would you modify your apparatus to collect dry hydrogen? Which drying agent would you employ for this purpose?
Advertisements
उत्तर
The gas is collected by the downward displacement of water.
Common drying agents such as fused calcium chloride, caustic potash stick and phosphorus pentoxide remove water vapor.
APPEARS IN
संबंधित प्रश्न
Multiple Choice Question
Water gas is a mixture of
How do different metals displace hydrogen from water? Explain with the help of equations.
For laboratory preparation of hydrogen, give the following:
fully-labeled diagram
Give reason for the following:
Purified and dried hydrogen is collected over mercury.
Give reason for the following:
The end of the thistle funnel should be dipped under acid.
Complete and balance the following reaction.
Zn + NaOH →_____________ +___________
Complete and balance the following reaction.
Al + KOH + H2O→_____________ +___________
Starting from hydrogen gas how would you obtain a basic gas.
Complete and balance the equation:
[General method]
Reactions of metals with steam
Zinc - Zn + H2O → ______+ _______ [g]
Select the correct answer to the reactant added, to give the product in the preparation of hydrogen gas.
\[\ce{Fe3O4 + H2}\]
