When a Metallic Oxide is Dissolved in Water, the Solution Formed Has a High Concentration of ____________ Ions

When a metallic oxide is dissolved in water, the solution formed has a high concentration of ____________ ions (H⁺, h₃O⁺, OH^-)

When a metal oxide is dissolved in water, the solution formed has a high concentration of OH^-

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Action of Alkalis on Certain Metals

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2016-2017 (March) Set 1

Q 1.1 | 5 marks

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

[SO₂, SiO₂, Al₂O₃, MgO, CO, Na₂O]

A basic oxide.

Name

a metallic hydroxide soluble in excess of NH₄OH.

Name a metal that evolves a gas which burns with a pop sound when boiled with alkali solutions.

Name a metallic hydroxide soluble in excess of NH₄OH.

Name: Two coloured ions

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

Fill in the blank.
To distinguish soluble salts of zinc and lead ______ [NaOH / NH₄OH]can be used.

Choose the correct answer from the options given below :
Metal + alkali → salt + _________

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

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