start with the equation for the reaction
2Al + 6H2O --> 2Al3+ + 3H2(g) + 6OH-
This is because the OH- removes the oxide coating from the Al, but the reaction is with the water.
Hence we can see that 2 moles of Al yields 3 moles of H2.
From your volume of H2 (you also need temperature and possibly pressure) you can calculate the number of moles using
If you do not have the PV information then assume that one mole of H2 occupies 22.4 litres and use this to calculate the number of moles.
The number of moles of Al is then two thirds of the number of moles of H2 (from the equation).
From the number of moles of Al calculate the mass of Al from the molar mass of Al.
Thanks, are these equations correct?
M (H2 in mol)=(V(H2 in ml)/1000)/22.4)
M (Al in mol)=2/3V(H2 in mol)
M (Al in g) = M (Al in mol) x 27
I am not sure that I follow your symbols.
Let V=volume of H2 (in ml)
Number of moles of H2=
V/(22.4 L mol^-1 x 1000 ml L^-1)
Number of moles of Al =
2xV/22.4 L mol^-1 x 1000 ml L^-1 x3)
mass of Al =
2xVx27 g mol^-1/(22.4 L mol^-1 x1000 ml L^-1 x3)
Thanks a lot.
physics - does anyone know who conducted the experiment or a credible ...
chemistry - An experiment is considered a controlled experiment if it contains ...
Chemistry - In the experiment of Nucleophilic substitution reactions: Competing ...
Chemistry - student did the Synthesis of Salicylic Acid experiment using 3.93 g ...
Physics - A very important experiment was carried out at the end of the 1800ís ...
Chemistry - Our class did an expeiment of adding sodium carbonate and calcium ...
biology - my quations are without changing appratus in an experiment how can the...
chemistry - In one experiment, the reaction of 1.00 g mercury and an excess of ...
chemistry - Ethanol was used in the solutions to help dissolve the ...
Science - 1. The ? is the part of an experiment that is not being tested and is ...