Making Carbon Dioxide Gas Experiment

If you ever wondered how to create some carbon dioxide gas by your own without those complex and hectic scientific processes. Here is the easier way to make carbon dioxide gas.

Aim: To test for carbon dioxide gas.


  • Limewater/Calcium Hydroxide (CaOH)
  • Calcium Carbonate (CaCO3)
  • Hydrochloric acid (HCI)
  • safety glasses
  • stopper/cork
  • one-arm test tube
  • test tube rack
  • medium sized beaker (150 ml)
  • small sized beaker (50ml)
  • rubber tube


  1. Setup the equipment as shown in the diagram.
  2. Pour some limewater into the beaker
  3. A small amount of calcium carbonate is added into the one-arm test tube
  4. Pour some hydrochloric acid to the one-arm test tube
  5. Quickly put the stopper on top of the one arm-test tube
  6. Make sure the rubber tube is in the beaker which contains the limewater
  7. Record the observations

Diagram: (Again, sorry for the unclear drawing.)


  • When calcium carbonate was added to the hydrochloric acid, the solution fizzed, showing that there is gas produced. When the gas had reached the limewater, it had started to appear milky.
  • To make sure the experiment was safe; you should wear safety glasses and be careful in handling the acids which might cause some irritation


Carbon dioxide gas was tested by adding calcium carbonate and hydrochloric acid together. This had resulted for the limewater to emerge milky.

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21 Responses to “Making Carbon Dioxide Gas Experiment”
  1. retre Says...

    On February 9, 2008 at 6:21 pm

    where cAn you find or buy carbon hydroxide or limewater?

  2. bj12marion Says...

    On February 11, 2008 at 2:29 am

    You could simply buy it in some store that specialises those kinds of things.

  3. hjghjghj Says...

    On June 23, 2008 at 6:29 am

    how do i make carbon dioxide not how do i test for it

  4. arooobine Says...

    On October 16, 2008 at 6:07 pm

    When you mix baking soda and vinegar it gives of carbon dioxide gas. Do this in a test tube and put a balloon (or something) over it to catch the co2.

    TIP: Inhailing co2 will give you an adrenaline rush.

  5. student Says...

    On March 10, 2009 at 10:55 am

    what could be some possible variables for this lab? all i can think of is the length of the rubber tube, but all that affects is how quickly the CO2 reaches the CaOH solution. so it is fairly insignificant.
    other than that, are there even any other variables?
    thank you !

  6. another student Says...

    On April 21, 2009 at 12:27 pm


    Inhaling concentrations of CO2 may lead to drowziness, nausea and eventual unconciousness within a few minutes to an hour. It is dangerous and should not be attempted.

  7. lab report Says...

    On May 24, 2009 at 4:23 am

    Hello, I’m doing this lab report on this experiment we did in class and i lost some of the info i needed to complete it. i just wanted to know what happend when you put a lighted splint in a test tube with co2 in it. and also what happens when you put a glowing splint inside. thanks

  8. Help plz Says...

    On June 8, 2009 at 4:35 pm

    What would be the chemical equation for this experiment???

  9. zama Says...

    On July 10, 2009 at 1:35 am

    do it able mix with drinking water? are there any health broblems?

  10. tom Says...

    On March 14, 2010 at 5:44 am

    Rubbish I didn\’t get a thing

  11. tom Says...

    On March 14, 2010 at 5:47 am

    Rubbish I didn\\\’t get a thing

  12. yogesh Says...

    On April 23, 2010 at 3:28 am

    tell me how i making co2 gas for commercial use in low prise plant ? my email

  13. Erin Says...

    On June 10, 2010 at 8:26 am

    the chemical equation would be: CaCO3 + 2HCl = CO2 + H2O + CaCl2

  14. alyss Says...

    On February 6, 2011 at 12:03 pm

    cool :D this is really useful as it helped me in my homework i had to do ! thanx

  15. bj12marion Says...

    On June 14, 2011 at 12:56 am

    you’re very welcome :)

  16. potta Says...

    On September 25, 2011 at 2:31 pm

    can i have a word equation for heat and copper carbonate makes carbon dioxide? i don’t understand if it is heat or oxygen you put in it.

  17. potta Says...

    On September 25, 2011 at 2:31 pm

    can i have a word equation for heat and copper carbonate makes carbon dioxide? i don\’t understand if it is heat or oxygen you put in it.

  18. MG Says...

    On December 4, 2011 at 4:17 pm

    please write the correct formula of lime water/calcium hydroxide Ca/OH/2

  19. Unknown Says...

    On July 23, 2012 at 12:39 am

    Hey idiot u 4got to do the hypothesis and observation.

  20. hasma Says...

    On January 11, 2013 at 8:05 am

    what is this. some fucked up dick

  21. Taleisha Says...

    On March 17, 2013 at 1:15 am

    Please balance equation

    CaCO3 + 2HCl = CO2 + H2O + CaCl2

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