Wednesday May 18th, 2016 18:59 Chemistry experiment – NaOH + aluminum

Concentrated sodium hydroxide solution easily reacts with aluminum foil. One of the products of this reaction is the hydrogen gas.

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    61 Comments on “Chemistry experiment – NaOH + aluminum”

    • kmb2620 July 30, 2010 at 3:11 pm

      what are the products?

    • sk8ergirl2014 July 31, 2010 at 11:19 am

      @fungsiufung sorry but that doesn’t balance..

    • TheChickenrape2009 August 6, 2010 at 7:28 pm

      Meahahahaha it’s alive oh wait nope it’s dead

    • mascio88 August 9, 2010 at 6:14 pm

      @fungsiufung sorry but i not understend the reaction in what form is sodium after the reaction ? Na+1 or Na

    • darcyryan99 August 15, 2010 at 5:08 pm

      @ElijahWheeler hydrochloric acid wasnt used?

    • chaosopher23 August 16, 2010 at 12:09 pm

      @BryanBeatsYouAll Muriatic acid is HCl, which is a masonry cleaner, also reacts with aluminum (“Works”) as does NaOH, which is drain cleaner. NaOH is preferred over HCl in drains because NaOH doesn’t attack copper, while HCl will. Red Devil lye, Drano… both NaOH.

    • gigstart September 21, 2010 at 11:26 am


      Wondering what happened to the Na?

    • kubu59 September 30, 2010 at 6:22 am

      This is the most epic sodium hydroxide + aluminum foil reaction ever \m/(>.<)\m/

    • wakamoleee12 October 21, 2010 at 5:40 am

      better living through chemistry

    • Kraized November 24, 2010 at 1:37 pm

      I love this. So what’s happening? I saw sodium hydroxide on top of the aluminum and then water was added. I know that hydrogen is created, but is that the only gas created? What exactly happened to the aluminum? What happens to the oxygen? What happens to the sodium? Ahh I need to know!!!

    • firedude201234 February 5, 2011 at 7:59 am

      HCl is hydrochloric acid not muriatic acid…….

    • 1993weekniej February 10, 2011 at 10:08 pm

      first reaction…NaOH –water–> Na+ + OH-.
      second reaction… 6OH- + Al2O3(Alumiumoxide… passivation) –> Al2O3 3- . 3H2O (the grey mineral what also arises is an amphoteric hydroxide)
      third reaction… 2Al + 12OH- –> Al2O3 3- . 3H2O + 2H2.
      This is why you don’t see immediately the strong reaction proceed. And the Na remains dissolved in the water.

    • dtarvin870 February 12, 2011 at 4:46 pm

      @firedude201234 if you buy HCL at any hardware store it will say muriatic acid on it. It’s the same thing.

    • rnedisc February 18, 2011 at 10:38 pm

      the NaOH went nomnomnomnomnom

    • geon79 February 26, 2011 at 9:26 am

      The 2° and especially the 3° reactions are wrong.
      More simply aluminium is such a powerful reducing agent that could react with water itself, just like sodium or lithium (3° reaction). The reason why it doesn’t is that in normal conditions the oxide that forms prevents futher oxidation (passivation), but with NaOH it dissolves immediately via 2° reaction and offers no protection
      2° reaction: Al2O3+3H2O+2OH- => 2[Al(OH)4]-
      3° reaciont: 2Al + 3H2O => Al2O3 + 3H2

    • chaosopher23 March 19, 2011 at 9:54 am

      @firedude201234 Look up the name “muriatic acid” in wikipedia. Muriatic acid is the archaic name for hydrochloric acid.

    • maggimh123 March 23, 2011 at 10:12 pm

      cool, genau das was ich für mein referat brauche

    • Llama4295 March 26, 2011 at 9:28 am

      insane it was small then bigger and bigger

    • medoalking5 March 26, 2011 at 3:32 pm

      To accelerate the reaction , make the aluminum like a small ball , and insert it to a tube filled with NaOH

    • Swashbucky April 12, 2011 at 2:52 am

      The NaOH dissolves the glass too!

    • nvmason73 April 20, 2011 at 3:25 am

      I’m confused.. What is the stuff on the spoon and what is the liquid he put on top of the whole thing??

    • Britneylover3 May 1, 2011 at 11:11 am

      @nvmason73 The white solid that was put on is NaOH (s). The liquid is just distilled water. He/she is just trying to make NaOH into a solution. Because the amount of water used was so little, the solution of NaOH is concentrated. Here is the generic equation:
      2 Al (s) + 6 H2O (l) —> 2 Al(OH)3 (aq) + 3 H2 (g)

      Al(OH)3 (aq) + NaOH (aq) –> Na+ (aq) + [Al(OH)4]- (aq)

    • yourcathatesme May 16, 2011 at 7:18 am

      3 words: duuuuuuuuuuuuuuuuuuude!

    • shussey100 May 20, 2011 at 4:18 am

      If you just done a murder. And you want to cleanse the scene. You mix this solution with bleach topically and scrub the place all over. Of course you would be wrapped head to toe in a body suit so you don’t leave any trace of yourself.
      Then use luminol under UV light to see if you left any strains.
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    • simplyincognito May 23, 2011 at 2:00 pm

      hydrogen gas… should of harnessed it and made a zeppelin…

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