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A pale blue gas having a characteristic ...

A pale blue gas having a characteristic sharp smell restores the colour of blackened lead paintings.The gas is

A

`O_(3)`

B

`O_(2)`

C

`SO_(2)`

D

`CI_(2)`

Text Solution

Verified by Experts

The correct Answer is:
1
Black lead sulphide is oxidized to while lead sulphate
`{:(O_(3)rarr O_(2) +O"]"xx4),(PbS+4O rarr PbSO_(4)),(bar(PbS+4O_(3) rarr PbSO_(4)+4O_(2))):}`
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