Question

What happens when zinc granules are dropped into a flask containing sulphuric acid?What is the gas porduced?

Answer 1

Zn⁺ H2SO4-----> ZnSO4⁺ H2

hydrogen gas is evolved..

Zn displaces hydrogen and forms zinc sulfate.

Answer 2

$\bold{SULPHURIC \: ACID}$

Sulphuric acid is a strong acid also known as "KING OF ACIDS"

and shows all acidic properties.

So, by acidic property of sulphuric acid , when it reacts with a active metal it gives out hydrogen and salt.

$\bold{ZINC}$

Zinc is an active metal which when added to acid , it gives out a sulphuric salt and a colourless and odourless gas hydrogen.

$\bold{EXPERIMENT}$

• Take a  clean and dry ,test tube and add zinc granules to it.
• Now,add sulphuric acid to the test tube.

$\bold{OBSERVATION}$

• A colourless odurless gas evolves  and a salt is formed which is zinc sulphate.

$\bold{TEST \: FOR \: HYDROGEN}$

• Hydrogen have no effect onlitmus paper
• When a glowing splinter is brought in contact with the gas , it extinguishes.
• Hydrogen burns with blue flame and with pop sound.

$\bold{EQAUTION}$

$Zn + H_2SO_4 \longrightarrow ZnSO_4 +H_2$