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Cream of tartar and baking soda

  1. Aug 28, 2012 #1
    what happens when you mix cream of tartar, baking soda, and water together?
    (i've never had time to try this):confused:

    KHC4H4O6 + NaHCO3 + H2O = ???
     
  2. jcsd
  3. Aug 29, 2012 #2

    Borek

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    What cream of tartar is (chemically)?
     
  4. Aug 29, 2012 #3
    Cream of tartar is KHC4H4O6
     
  5. Aug 29, 2012 #4

    Borek

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    I am not asking for formula, I am asking for properties.

    Even checking the correct chemical name (not a common name) can give you a hint.
     
  6. Sep 9, 2012 #5
    Potassium bitartrate, also known as potassium hydrogen tartrate, has formula KC4H5O6, is a byproduct of winemaking. In cooking it is known as cream of tartar. It is the potassium acid salt of tartaric acid, a carboxylic acid. Also is, according to NIST, used as a primary reference standard for a pH buffer. Using an excess of the salt in water, a saturated solution is created with a pH of 3.557 at 25 °C. Upon dissolution in water, potassium bitartrate will dissociate into acid tartrate, tartrate, and potassium ions. Thus, a saturated solution creates a buffer with standard pH. Before use as a standard, it is recommended that the solution be filtered or decanted between 22 °C and 28 °C.[5]

    Potassium carbonate can be made by igniting cream of tartar producing "pearl ash". This process is now obsolete but produced a higher quality (reasonable purity) than "potash" extracted from wood or other plant ashes.
    from Wikipedia
    I hope this helps :smile:
     
  7. Sep 9, 2012 #6

    Borek

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    It was you who asked the question, so apparently it didn't help as of yet :tongue:

    or

    Both names show it is not fully neutralized acid. It is even enforced by this statement:

    Low pH, it is an acidic solution.

    What kind of reaction could you expect when you mix an acid with a hydrogen carbonate?
     
  8. Sep 10, 2012 #7
    umm... it makes CO2 or some other gas? :uhh:.. and fizzes?
     
  9. Sep 10, 2012 #8

    Borek

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    No other gas, just CO2 and water. And some fizzing.

    Wasn't that hard.
     
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