Name the metal hydroxides which are soluble in caustic soda solution.

One Line Answer

Zn(OH)₂, Pb(OH)₂

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Action of Alkalis on Certain Metals

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Chapter 4: Analytical Chemistry - lntext Questions [Page 66]

Chapter 4 Analytical Chemistry
lntext Questions | Q 4. (b) (i) | Page 66

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

a metallic hydroxide soluble in excess of NH₄OH.

Name the metal hydroxides which are:

Sparingly soluble

In caustic soda solution

What is the reaction of freshly precipitated aluminium hydroxide with caustic soda solution? Give equation.

Give two examples of amphoteric hydroxides.

Name the chloride of a metal which is soluble in excess of ammonium hydroxide.

Why the alkali is added drop by drop to the salt solution?

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

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

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