Chemistry, asked by bairagiroshmita, 1 year ago

addition of zinc nitrte to water is physical change but addition of zinc to dilute nitrate acid is a chemical change give reason

Answers

Answered by kushagrajhalani
3

When Zinc nitrate is pored in the water it does not react with water.

It dissociates into the ions Zn⁺ and NO₃²⁻ .  No zinc hydroxide is formed.

Thus addition of Zinc nitrate into the water is a Physical change, as chemical properties of zinc nitrate in water remain as such.


While adding Zinc to dilute Nitric acid , we get


3Zn (s) + 8HNO₃ (dil) (l) →  3Zn(NO₃)₂ + 2NO+ 4H₂O


which is a Chemical reaction.Because zinc becomes zinc nitrate, besides producing nitrogen oxide and water.


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