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a) What is thermite reaction ?b) Q is an element which is one in copper, zinc, aluminium and iron, its properties are as follows.i) Q2 Q3 is found in nature but not affected by water.ii) Two chlorides with formula QCl2 and QCl3 are formed by the metal. Identify the metal

Answer»

a) The displacement reaction which is. highly exothermic and the metal produced is in molten state is called thermite reaction.
i) Since the oxide of the metal is Q2Q3 its valence is 3. therefore out of the mentioned metal only aluminium and iron can be the metal with properties mentioned above.
ii) QCl2 and QCl2 must be iron as it shows variable valency of two and three. FeCl2 and FeCl3 are the chlorides.



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