Cream of tartar and baking soda

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SUMMARY

The discussion centers on the chemical interaction between cream of tartar (potassium bitartrate, KHC4H4O6) and baking soda (sodium bicarbonate, NaHCO3) when mixed with water. When combined, these substances create a saturated solution with a pH of 3.557, indicating an acidic environment. The reaction produces carbon dioxide (CO2) gas, resulting in fizzing. Additionally, cream of tartar serves as a primary reference standard for pH buffers, highlighting its significance in both culinary and scientific applications.

PREREQUISITES
  • Chemical properties of potassium bitartrate (cream of tartar)
  • Understanding of sodium bicarbonate (baking soda) reactions
  • Knowledge of pH and buffer solutions
  • Basic principles of acid-base reactions
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  • Research the chemical properties of potassium hydrogen tartrate
  • Learn about the role of cream of tartar in baking and cooking
  • Explore the process of creating potassium carbonate from cream of tartar
  • Investigate the applications of pH buffers in laboratory settings
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Chemists, culinary professionals, and anyone interested in the chemical reactions involved in baking and food science.

Sulfur
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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 = ?
 
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What cream of tartar is (chemically)?
 
Cream of tartar is KHC4H4O6
 
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.
 
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:
 
It was you who asked the question, so apparently it didn't help as of yet :-p

Potassium hydrogen tartrate

or

potassium acid salt of tartaric acid, a carboxylic acid

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

saturated solution is created with a pH of 3.557

Low pH, it is an acidic solution.

What kind of reaction could you expect when you mix an acid with a hydrogen carbonate?
 
umm... it makes CO2 or some other gas? :rolleyes:.. and fizzes?
 
No other gas, just CO2 and water. And some fizzing.

Wasn't that hard.
 

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