What Do You Understand by Amphoteric Oxide? - Chemistry

What do you understand by amphoteric oxide?

One Line Answer

Amphoteric oxides are compounds which react with both acids and alkalis to form salt and water.

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Action of Alkalis on Metal Oxides

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Chapter 4: Analytical Chemistry: Uses of Ammonium Hydroxide and Sodium Hydroxide - Exercise 4 [Page 68]

Chapter 4 Analytical Chemistry: Uses of Ammonium Hydroxide and Sodium Hydroxide
Exercise 4 | Q 15. (a) | Page 68

_____________ (AgCl / PbCl₂), a white precipitate is soluble in excess NH₄OH

Name a solution that will separate the component of the following mixture: CaO from PbO

Name a solution that will separate the component of the following mixture: CuO from ZnO

Choose the correct answer from the options given below :
Color of ferrous ion is

Choose the correct answer from the options given below :
Sodium zincate (Na₂ZnO₂) is

Give one chemical test to distinguish between the following pair of compounds:

Zinc sulphate solution and Zinc chloride solution.

Write a balanced equation for the following conversion:

\[\ce{ZnSO4 ->[A]Zn(OH)2->[B]Na2ZnO2}\]

A given white crystalline salt was tested as follows:

The addition of barium chloride solution into this solution gave a white precipitate. What conclusions can be drawn for the observation?

Write balanced equation for a coloured metallic oxide which dissolves in alkalis to yield colourless solutions.