2NaOH + 2Al +2H2O = 2NaAlO2 + 3H2 An apparatus for carrying out the method is also described. The white powdery stuff is mostly aluminum oxide with a bit of sodium hydroxide. Al is amphoteric in nature, so it can react with both acid and base. The types of reactions found to occur between aluminum, sodium hydroxide, and water are shown below: Become … Shredded cans might be better. Even using chunks of aluminum cut from an old window frame, the solution got so hot, it boiled. We had to hold a long tube vertically over a jar to condense the steam and let it run back into the jar. Hence, 0.466 moles of hydrogen gas are produced. observed, as well as the regeneration of sodium hydroxide via the precipitation of aluminum hydroxide. The lacquer and labels on the cans are a bit of a nuisance, they block the lye from getting to the outside of the cans. When aluminum and sodium hydroxide come into contact with one another, there is quite a vigorous reaction. The process for producing hydrogen gas according to the present invention consists of reacting aluminum with water in the presence of sodium hydroxide as a catalyst. On treatment with NaOH, Al gives sodium aluminate salt and hydrogen gas. Stockburger et.al. The reaction of aluminum and sodium hydroxide generates buckets of hydrogen. The water has to be replenished often as it gets cracked away to oxidize the aluminum and release hydrogen. The reaction is highly exothermic. How many moles of hydrogen can be produced from 8.40 grams of aluminum and excess sodium hydroxide? Not surprisingly, the preferred embodiment of the invention is the production of hydrogen from aluminium spheres and sodium hydroxide solution. (11) described hydrogen generators in which aluminum was reacted with an aqueous solution of 5.75 M sodium hydroxide.