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Lead cannot be used for the preparation of hydrogen gas by reacting with dilute acids

Lead cannot be used for the preparation of hydrogen gas by reacting with dilute acids

Grade:8

1 Answers

Arun
25750 Points
5 years ago

Lead is above hydrogen in the metal activity series ( H2 is included for comparison of reactivity with other metals). So it can displace H from compounds.

In the reactions with acids, insoluble salts of lead are produced which forms a coating on pure lead and prevents the reaction from proceeding further. Thus, Pb is not used to prepare H2.

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