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Chemical Reaction

Q1 A white co...

Question

Q1 A white coloured salt 'X' on heating decomposes to give a brown coloured and a colourless gas leaving a white yellow residue . Name the salt 'X' and also write its reaction ?

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Solution

2Pb(NO₃)₂(s)-------> 2PbO(s) + 4NO₂(g) + O₂(g)
(Lead nitrate) (Lead oxide)
dioxide)
X = Pb(NO₃)₂which is a white coloured salt.
Lead oxide is a white yellow residue
NO₂is a brown coloured gas
O₂ is a colourless gas.

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