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# Explain why lead carbonate is does not react with dilute $HCl.$

Last updated date: 17th Mar 2023
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Lead appears not to react with dilute hydrochloric acid and dilute sulphuric acid. This is because a layer of lead $\left( II \right)$ chloride or lead $\left( II \right)$ sulphate is formed from the initial reaction between the lead and the dilute acid. This layer is insoluble in water and quickly forms a coating around the metal. The coating protects metal from further attack by acids. The lead carbonate does not react with dil. $HCl$ because the initial reaction causes the formation of a layer of lead $\left( II \right)$ chloride or lead $\left( II \right)$ sulfate. This layer is insoluble in water and apparently forms a layer which prohibits the reaction of lead carbonate and dil. $HCl.$