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Standard IX
Chemistry
Law of Conservation of Mass
A colourless ...
Question
A colourless lead salt, when heated, produces a yellow residue and brown fumes.
Write a chemical equation of the reaction involved.
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Solution
The colorless lead salt will be lead nitrate
P
b
(
N
O
3
)
2
. On heating, it forms lead oxide & brown fumes of
N
O
2
gas liberate.
The equation is given by,
2
P
b
(
N
O
3
)
2
⟶
2
P
b
O
+
4
N
O
2
↑
+
O
2
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