Question

How to know which oxide is acidic and which is basic?

Answer 1

Basic oxide:

Metals react with oxygen to give basic compounds of oxygen. These compounds are usually ionic in nature. Group 1, 2 and lanthanides form basic compounds of oxygen when they react with dioxygen. During the formation of these compounds, a large amount of energy is released. These compounds readily react with water except few exceptions.

Examples: M2O3, MO2, ThO2

Na2O + H2O → 2NaOH

Acidic oxide:

Non-metals react with oxygen to form acidic compounds of oxides which are held together by covalent bonds. These compounds can also be called as acid anhydrides. Acid anhydrides usually have a low melting and boiling point except for compounds like B2O3 and SiO2 which have high melting points and form giant molecules.

Examples: NO, CO2

SO3 + H2O → H2SO4

B2O3 + H2O → 2H3BO3

I hope it will help u

Answer 2

Hi here is your answer

By testing with litmus paper

You can find the whether the oxide is acid or base

And even the property you can check on

For example, acid are sour in taste, base are better, acid,

Hope it help you

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