Problem 31a
Textbook Question

Hydrobromic acid dissolves solid iron according to the reaction: Fe(s) + 2 HBr(aq)¡FeBr2(aq) + H2( g) What mass of HBr (in g) do you need to dissolve a 3.2-g pure iron bar on a padlock? What mass of H2 would the complete reaction of the iron bar produce?

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