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What is the action of heat on the follow...

What is the action of heat on the following?
(a) Ammonium hydroxide
(b) Aluminium hydroxide
(c) Sodium hydroxide

Text Solution

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(a) Ammonium hydroxide decomposes rapidly to give ammonia gas and water upon slight heating.
`NH_(4)OH overset(Delta)rarr NH_(3) + H_(2)O`
(b) On heating aluminium hydroxide gives alumina and water.
`2A1(OH)_(3) rarr A1_(2)O_(3) + 3H_(2)O` ltBrgt (c) NaOH melts on strong heating but it does not undego decomposition.
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