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| Introduction |
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| It is well known that a
base is a substance that combines with an acid to form salt
and water only. |
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| In the equations given
below, the metal oxides behave as bases. |
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| In the reactions given
below, the three hydroxides i.e., sodium hydroxide,
potassium hydroxide and ammonium hydroxide behave as bases |
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| All hydroxides e.g. NaOH,
KOH, Ca(OH)2 NH4OH etc. containing the
hydoxyl (OH-) group are called alkalis. An alkali
is a base that is soluble in water. |
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Action of Alkalis on Substances
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