(i) On heating white powder of lead(II) nitrate in a boiling tube , Lead oxide ,oxygen gas and
a brown gas X is formed.
(a) Write a balanced chemical equation for the reaction.
(b) Identify the brown gas X evolved.
(c) Identify the type of reaction.
(d)What would be the pH range of the aqueous solution of the gas?
(ii)The carbonate of metal X is a white solid .It decomposes when heated to form
carbondioxide gas and a white solid oxide which is used for white washing the walls.What
is metal X?
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(b) The brown gas 'X' has to be nitrogen dioxide. (c) This type of reaction falls under the category of Decomposition reactions. The oxides of non metals are generally acidic in nature.
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