metal that can be added to aluminium ore to reduce it to the metal?
Just do it the normal way? You know, the one that costs the same as making a houseHere you goCrushed bauxite is treated with moderately concentrated sodium hydroxide solutionThe concentration, temperature and pressure used depend on the source of the bauxite and exactly what form of aluminium oxide it containsTemperatures are typically from 140°C to 240°C; pressures can be up to about 35 atmospheresHigh pressures are necessary to keep the water in the sodium hydroxide solution liquid at temperatures above 100°CThe higher the temperature, the higher the pressure neededWith hot concentrated sodium hydroxide solution, aluminium oxide reacts to give a solution of sodium tetrahydroxoaluminateA2O3 + 2NaOH + 3H2O - 2NaAl(OH)4 Then The sodium tetrahydroxoaluminate solution is cooled, and seeded with some previously produced aluminium hydroxideThis provides something for the new aluminium hydroxide to precipitate aroundNaAl(OH)4 - Al(OH)3 + NaOH Aluminium oxide (sometimes known as alumina) is made by heating the aluminium hydroxide to a temperature of about 1100 - 1200°C2Al(OH)3 - Al2O3 + 3H2O Now to use electrode reactionsThese are very complicated - in fact one source I've looked at says that they aren't fully understoodFor chemistry purposes at this level, they are always simplifiedThis is the simplification: Aluminium is released at the cathodeAluminium ions are reduced by gaining 3 electronsAl2 + 3 E- - Al Oxygen is produced initially at the anode4O2 - O2 + 4 E- Whole processThereHowever, at the temperature of the cell, the carbon anodes burn in this oxygen to give carbon dioxide and carbon monoxideContinual replacement of the anodes is a major expense.
If you had excess chlorine, how many moles of of aluminum chloride could be produced from 13.0 g of aluminum? 0.482 mol If you had excess aluminum, how many moles of aluminum chloride could be produced from 18.0 g of chlorine gas, Cl2? 0.169 mol
