Advertisements
Advertisements
Question
How can you obtain hydrogen from sodium hydroxide [not by electrolysis].
Advertisements
Solution
When powdered zinc reacts with sodium hydroxide it produces hydrogen.
\[\ce{Zn + 2NaOH ->\underset{\text{Sodium zincate}}{Na2ZnO2} + H2}\]
APPEARS IN
RELATED QUESTIONS
State four uses of hydrogen:
Define catalytic hydrogenation.
Multiple Choice Question
Equal volumes of hydrogen and chlorine are exposed to diffused sunlight to prepare
FILL IN THE BLANK
Hydrogen is present abundantly in the ................
Give the balanced equation of the reaction.
With reference to the equation : Cl2 + H2S → 2HCl + S pertaining to a redox reaction – select the correct answer.
Chlorine is ______ to HCl.
Give balanced equation for the following conversion:
Water gas to hydrogen – industrially.
Give balanced equation for the following conversion:
Nitrogen to a basic gas – using hydrogen.
Give reason for the following:
The reaction of chlorine with hydrogen sulphide is deemed a redox reaction.
What do the following symbols [or formula] denote : 2H ; H2 ; H+. [two atoms, molecule, ion]
When steam is passed over red-hot iron, magnetic oxide of iron and hydrogen are obtained. “The reaction between steam and red-hot iron is a Reversible Reaction.” What is meant by this statement.
Write balanced equation for the following reaction:
magnesium + dil. hydrochloric acid → ___
Write correctly the balanced equation for the following:
‘When zinc filings are added to a concentrated solution of sodium hydroxide’.
Complete and balance the following equations:
Al + NaOH + ____ → ____ + ____
Write balanced equation of the reaction in the preparation of : hydrogen from a solution of potassium hydroxide [other than by electrolysis].
Describe briefly, with equations, the Bosch Process for the large scale production of hydrogen.
Give balanced equation for obtaining hydrogen from cold water using a monovalent active metal.
Give a reason for the following.
A mixture of hydrogen and chlorine can be separated by passage through a porous pot.
Select the correct answer from the symbol in the bracket.
The element, which like hydrogen has one valence electron.
