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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.
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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