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Question
During the reaction of some metals with dilute hydrochloric acid, following observations are made.
Some bubbles of a gas are seen when lead (Pb) is reacted with the acid.
Explain this observation giving suitable reason.
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Solution
Lead (Pb) reacts with dilute HCl to evolve hydrogen gas accompanied by bubbles.
`"Pb"("s") + 2"HCl"("aq") -> "PbCl"_2("aq") + "H"_2("g")`
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