Question

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why all alkali are bases but all bases are not alkalis?​

Answer 1

Answer:

A substance that neutralizes an acid is a base and that soluble in water is an alkali. However, all bases are not soluble in water. Thus, All alkali are bases but all bases are not alkali.

OR

A base is a substance that reacts with acids and neutralize them. Some bases are soluble in water some are insoluble. Soluble bases are called alkalies.

For example copper oxide does not dissolve in water. Hence it is called as base.

Definition of an alkali: A base that is soluble in water is called an alkali.

In general hydroxides of alkali metals and alkaline earth metals are considered as alkalies.

Example:

KOH (aq) → K+(aq) + OH- (aq)

Ca(OH)2(aq) → Ca+2 (aq) + OH-(aq)

Therefore, it is said that all alkalis are bases, but all bases are not alkalies.

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