Name a metallic hydroxide soluble in excess of NH4OH.

Name a metallic hydroxide soluble in excess of NH₄OH.

One Line Answer

Zinc hydroxide [Zn(OH)₂]

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Action of Alkalis on Certain Metals

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Chapter 4: Analytical Chemistry - Exercises [Page 83]

Chapter 4 Analytical Chemistry
Exercises | Q 3. (a) | Page 83

Choose the most appropriate answer from the following list of oxides which fit the description.

[SO₂, SiO₂, Al₂O₃, MgO, CO, Na₂O]

An amphoteric oxide

Name two coloured metal ions.

Name the metal hydroxides which are :
(a) Insoluble (b) Soluble in
(i) Caustic soda solution (ii) Ammonium hydroxide solution.

Name: A strong alkali

Name: Two coloured ions

Name : A yellow monoxide that dissolves in hot and concentrated caustic alkali.

Fill in the blank.
The hydroxide which is soluble in excess of NaOH is _________ [Zn(OH)₂ / Fe(OH)₃ / Fe(OH)₂].

Fill in the blank.
The substance/s which react with hot conc. NaOH solution and undergoes a neutralization reaction ______ [Al₂O₃ / Al / Al(OH)₃]

Write the equation for the following reaction :
Zinc oxide is treated with sodium hydroxide solution.

Write balanced equations for a metal that evolves a gas which burns with a pop sound when boiled with alkali solutions.