Advertisements
Advertisements
Question
Select the correct answer to the reactant added, to give the product in the preparation of hydrogen gas.
\[\ce{Al2(SO4)3 + H2}\]
Options
dilute acid
dilute alkali
cold water
conc. alkali
boiling water
conc. acid
steam
Advertisements
Solution
Reactant added to get the product:
\[\ce{Al2(SO4)3 + H2:Dilute acid}\]
APPEARS IN
RELATED QUESTIONS
Match the statements in Column A with those in Column B.
| Column A | Column B |
|
1. A metal which reacts with cold water to from hydrogen. |
1. Reduction |
| 2. A gas which is inflammable and non-supporter of combustion | 2. Hydrogenation |
|
3. A process in which vanspati ghee is prepared from vegitable oils |
3. oxidation |
|
4. The removal ofhydrogen or addition of oxygen |
4. sodium |
| 5. The addition of hydrogen or removal of oxygen | 5. Hydrogen |
Which test should be made before collecting hydrogen in a gas jar?
Give reason for the following:
Purified and dried hydrogen is collected over mercury.
Where does hydrogen occur in a free state?
Why are the following metals not used in the lab. preparation of hydrogen?
sodium
Complete and balance the following reaction.
Zn + H2O →_____________ +___________
Select the correct options for the following statement:
The acid _____ is not Used in the laboratory preparation of hydrogen, using zinc and an acid.
Complete and balance the equation:
[General method]
Reactions of metals with steam
Zinc - Zn + H2O → ______+ _______ [g]
How did the name ‘hydrogen’ originate? How does hydrogen occur in the combined state?
Give a balanced equation for the following conversion.
\[\ce{NH3<-H2->H2S}\]
