Ironaluminum alloys are useful in some applications because they become magnetized in a magnetic field but are

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Iron–aluminum alloys are useful in some applications because they become magnetized in a magnetic field but are easily demagnetized when the field is removed. The composition of an iron–aluminum alloy can be determined chemically by reacting it with hydrochloric acid:

2 Al(s) + 6 HCl(aq)  2 AlCl3(aq) + 3 H(g) Fe(s) + 2 HCl(aq)  FeCl(aq) + H(g)


When a 7.264-g sample of a particular iron–aluminum alloy was dissolved in excess hydrochloric acid, 0.3284 g of H2(g) was produced. What was the mass percentage of aluminum in the alloy?

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Chemistry For Engineering Students

ISBN: 9780357026991

4th Edition

Authors: Lawrence S. Brown, Tom Holme

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