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DEMO|TOPIC 02-ACIDS, BASES AND SALT

 

TOPIC 02-ACIDS, BASES AND SALT

BASE

A base is a substance which contains the oxide ion or hydroxide ion and reacts with acid to give salt and water only

Or

A base is a soluble substance which accepts a proton

A soluble base is called Alkali

The Alkaliโ€™s are

The solution of Ca(OH)2 in water is called lime water

Magnesium hydroxide (milk of magnesia โ€ฆโ€ฆโ€ฆMg(OH)2

Itโ€™s also sparingly soluble

The soluble bases when in solution produce OH- as their only negative ion

PROPERTIES OF BASES

  1. Alkalis have a soapy feeling (slippery)

  2. Alkalis have bitter taste

  3. Alkalis turn red to blue litmus paper

  4. They react with acids and water only

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