what happens when dilute sulphuric acid is added to zinc?
Answers
Answered by
62
Heya friend,
When Zinc reacts with dil. sulphuric acid, it forms Zinc sulphate and hydrogen gas is liberated.
The chemical equation for the above reaction is:-
Zn+ H2SO4(dil.) - ZnSO4+H2(liberated)
HOPE THIS HELPS
thankyou very much
Wlcm buddy ^_^
Answered by
24
HELLO THERE!
Let me explain you from the beginning.
LOOK DOWN!!
Firstly, let me tell you about the activity series of metals.
According to it,
K
Na
Ca
Mg
Al
Zn
Fe
Ni
Sn
Pb
H
Cu
Hg
Ag
Au
Pt
Now, the metals above hydrogen (H) in the series can displace hydrogen from dilute acids. In other words, when the metals above Hydrogen in the series react with dilute acids like dilute Hydrochloric acid, dilute sulphuric acid, etc (not nitric acid), hydrogen gas is formed.
In the question, reaction between zinc and dilute sulphuric acid is asked.
Zinc is a metal above hydrogen, so hydrogen gas will be liberated when the reaction occurs.
Reaction:
Zn + H₂SO₄ -----> ZnSO₄ + H₂
Two products are formed:
1. Zinc sulphate, which is a colourless solution. When little ammonium hydroxide solution is added on this solution, we get a Gelatinous white precipitate (of zinc hydroxide). When excess ammonium hydroxide solution is added, this precipitate dissolves in it, forming a complex salt, zinc tetrammine sulphate.
2. Hydrogen, which is a colourless gas, burns with a pale blue flame in the air, forming tiny droplets of water. When a matchstick is brought near it, it goes off with a pop sound. In diffused sunlight, when this gas reacts with chlorine gas, hydrogen chloride gas is formed, which has a characteristic pungent odour (smell).
THANKS!
Let me explain you from the beginning.
LOOK DOWN!!
Firstly, let me tell you about the activity series of metals.
According to it,
K
Na
Ca
Mg
Al
Zn
Fe
Ni
Sn
Pb
H
Cu
Hg
Ag
Au
Pt
Now, the metals above hydrogen (H) in the series can displace hydrogen from dilute acids. In other words, when the metals above Hydrogen in the series react with dilute acids like dilute Hydrochloric acid, dilute sulphuric acid, etc (not nitric acid), hydrogen gas is formed.
In the question, reaction between zinc and dilute sulphuric acid is asked.
Zinc is a metal above hydrogen, so hydrogen gas will be liberated when the reaction occurs.
Reaction:
Zn + H₂SO₄ -----> ZnSO₄ + H₂
Two products are formed:
1. Zinc sulphate, which is a colourless solution. When little ammonium hydroxide solution is added on this solution, we get a Gelatinous white precipitate (of zinc hydroxide). When excess ammonium hydroxide solution is added, this precipitate dissolves in it, forming a complex salt, zinc tetrammine sulphate.
2. Hydrogen, which is a colourless gas, burns with a pale blue flame in the air, forming tiny droplets of water. When a matchstick is brought near it, it goes off with a pop sound. In diffused sunlight, when this gas reacts with chlorine gas, hydrogen chloride gas is formed, which has a characteristic pungent odour (smell).
THANKS!
Similar questions
Zn (s) + H2SO4 (aq) ---> ZnSO4 (aq)+ H2 (g)
When we take the test tube containing zinc and sulphuric acid near a candle or a burner, we hear a pop sound. This shows the presence of Hydrogen .
Also, if we take the the test tube near a litmus paper, the color remains same. This shows that hydrogen is neither acidic nor basic in nature. It is neutral in nature.