Question

990
How can you obtain hydrogen from a mixture of hydrogen and
What do you observe when a piece of sodium is dropped into cold
Give reasons for the following: "Though hydrogen lighter than a
displacement of air
Complete the following word equations:
0 Sodium hydroxide + zinc → hydrogen
ii) Calcium + water → calcium hydrodde
91
How would you obtain "hydrogen from sodium hydroxide solution​

Answer 1

Answer:

hydrogen can be obtained by reacting the given solution with some other acid or base.

when sodium is dropped into cold water it burn quickly because it react with water form hydrogen gas which catches fire.

sodium hydroxide+zinc→sodium zincate+hydrogen.

we could obtain hydrogen from sodium hydroxide solution by simply adding aluminium to it it will give rise to sodium aluminate and hydrogen gas will be evolved