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Aluminum reacts with hydrochloric acid, but copper does not react with the acid. When a mixture...

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Chemistry

Aluminum reacts with hydrochloric acid, but copper does notreact with the acid. When a mixture of aluminum and copper having amass of 0.3579 grams is combined with excess hydrochloric acid,315.50 mL of hydrogen gas, measured over water, is generated. Thetemperature at the time of collection is 27.3 oC (vaporpressure of water at 27.3 oC = 27.214 torr), and thetotal pressure in the collection container is 764.1 torr. Determinethe mass percentage of aluminum in the original mixture.

I've pretty much got my chem exam down for tomorrow, but Ireally need guidance for this question. Please show work andexplain what you did (doesn't have to be so detailed).

Answer & Explanation Solved by verified expert
4.3 Ratings (854 Votes)
Total pressure is 7641 torr vapor pressure of water at 273 oC 27214 torr Therefore pressure for hydrogen 7641 torr 27214 torr 736886 torr 736886 760 atm    See Answer
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