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  3. Chemistry
  4. To a solution of colourless sodium salt, a solution of lead nitrate was added to have a white precipitate which dissolves in warm water and reprecipitates on cooling. Which of the following acid radical is present in the salt?

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Q. To a solution of colourless sodium salt, a solution of lead nitrate was added to have a white precipitate which dissolves in warm water and reprecipitates on cooling. Which of the following acid radical is present in the salt?

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Solution:

$2 NaCl + Pb \left( NO _3\right)_2 \rightarrow PbCl _2(p p t)+2 NaNO _3$