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    Home / Science lessons / Making Limewater Solution
    • Making Limewater Solution

      Making Limewater Solution

      Limewater is used in many science experiments and is easy to make on your own.

      1. Put 1 teaspoon of calcium hydroxide in a clean glass jar, up to 1 gallon in size. (Limewater is a saturated solution, which means there will be some extra chemical that doesn't dissolve. A teaspoon will result in a fully saturated solution whether you use a gallon jar or a smaller one.)
      2. Fill the jar with distilled or tap water.
      3. Shake the jar vigorously for 1-2 minutes, then let it stand for 24 hours.
      4. Being careful not to stir up the sediment, pour the clearer solution off the top of the jar through a clean coffee filter or filter paper.
      5. Repeat the filtering step if necessary to obtain a clear limewater solution. Store in a clean jar or bottle.

      When carbon dioxide is bubbled into limewater, calcium carbonate (CaCO3) is produced. It precipitates out as a white suspended solid, making the solution appear cloudy.

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    By: Viswanathan
    Date: May 10, 2017

    How much gram of calcium hydroxide should added to 1 lit of distilled water

    By: harsh
    Date: May 04, 2017

    the solution prepared is Ca(OH)2 and putting the solution for 24 hrs is right , i dont think so beause the concentration might change of the solution ( like it can be evaporate and other causes might occurs there )
    can you plz clear it
    and the solution prepared can be used for others reaction also ?

    By: Shivam
    Date: Apr 17, 2017

    why some times lime water does not turns milky even after bubbling CO2 into it. Also even if lime water is freshly and carefully prepared.

    Date: May 02, 2016

    Thanks for the info but tell me how much carbon dioxide can 1 mile of lime water absorb

    By: Mandy Yuen
    Date: Aug 19, 2015

    I would like to make 30% lime solution suspended, how can I do that? Do i need to add anything to suspend it?

    By: jayant prakash
    Date: Jul 17, 2015

    a man can drink lime water ?

    [HST Adds:  Limewater is not safe to drink.  It is recommended to contact a doctor or poison control center if limewater is accidentally ingested.  Hope this helps!]

    By: xena
    Date: Mar 20, 2015

    How much distilled water should i add to the teaspoon?

    By: steve peacock
    Date: Feb 22, 2015

    ... and if you carry on blowing CO2 into the cloudy solution, it will eventually go clear again !  (as the milky calcium carbonate turns to soluble calcium bicarbonate).

    By: Alison
    Date: Oct 03, 2014

    this really helped me with my GCSE science homework. thank you so much!

    By: Tunde Ogunsina
    Date: May 24, 2014

    your information is well readable and comrehended.thank very much.hope to read more.