Aluminum reacts with aqueous #HBr# to produce hydrogen gas and aluminum bromide. How many mL of hydrogen gas are produced at 1.03 atm and 20.00 #"^o#C when 0.498 g of aluminum react with an excess of #HBr#?
First you need a stoichiometric equation:
Finally we get under a
Each equiv of metal reduces
And now it is an Ideal Gas calculation (mind you if we collect the gas over water, we should include the
This is experiment that could be performed in a high school lab with litre graduated cylinders, with which to collect the gas.