name the reaction in which change in colour occurs
Answers
Answer:
The reaction in which colour change take place is rusting of iron.
Answer:
Colour reaction
Explanation:
In chemistry, a color reaction or colour reaction is a chemical reaction that is used to transform colorless chemical compounds into colored derivatives which can be detected visually or with the aid of a colorimeter. The concentration of a colorless solution cannot normally be determined with a colorimeter.
When copper reacts with the elements (oxygen, water and carbon dioxide), it turns from its element color of reddish-brown to green. This chemical reaction is hydrated copper carbonate, and a famous example of it is the Statue of Liberty. Over time, its copper plates underwent a chemical reaction.
Corrosion is also example of colour reaction.
In precipitation reaction also colour change occurs.
BaCl2+ Na2SO4----->BaSO4+2NaCl
(white)