Question
State your observation when :
Dilute hydrochloric acid is added to lead nitrate solution and the mixture is heated

Answer

When dil. HCl is added to lead nitrate solution and heated, it forms a white precipitate of lead chloride.
$Pb \left( NO _3\right)_2+2 HCl \rightarrow PbCl _2+2 HNO _3$

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