Why is reaction between lead and concentrated hydrochloric acid stopped after some time?
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The surface of metallic lead is protected by a thin layer of lead oxide PbO. This renders the lead essentially insoluble in sulfuric acid. Lead reacts slowly with hydrochloric acid and nitric acid.
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Answer:
The surface of metallic lead is protected by a thin layer of lead oxide PbO. This renders the lead essentially insoluble in sulfuric acid. Lead reacts slowly with hydrochloric acid and nitric acid.
Lead reacts slowly with hydrochloric acid, HCl and nitric acid, HNO3.
Explanation:
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