5. A 1.1181-g sample of an alloy (a mixture) of aluminum and magnesium was treated with an
excess of sodium hydroxide solution. In the reaction, only the aluminum reacts with the sodium
hydroxide solution:
2 Al + 2 NaOH + 6 H202 Na[Al(OH)4] + 3 H2
If 0.1068 g of H2 is produced, what is the mass percent of aluminum in the alloy?
Answers: 3
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5. A 1.1181-g sample of an alloy (a mixture) of aluminum and magnesium was treated with an
excess o...
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