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Question

Sulphur dioxide gas turns lead acetate paper black.

A
True
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B
False
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Solution

The correct option is B False
Sulphur dioxide reacts with lead acetate paper as follow.
Pb(CH3COO)2 + SO2 Pb(SO2)2 + (CH3COO)2
No black colour substance is formed.
Hence this statement is false.
Hydrogen sulphide turns the colour of lead acetate paper black according to the following reaction

The formation of PbS gives the black colour.


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