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Vanny Jay
Jul 2

Explain how calcium hydrogen carbonate reacts with sodium stearate or soap?

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ChatGPT
Jul 2
When calcium hydrogen carbonate reacts with sodium stearate or soap, a chemical reaction occurs that results in the formation of calcium stearate, water, and carbon dioxide gas.

The reaction can be represented by the following chemical equation:

Ca(HCO3)2 + 2C17H35COONa → Ca(C17H35COO)2 + 2H2O + 2CO2

In this reaction, the calcium hydrogen carbonate (Ca(HCO3)2) reacts with the sodium stearate (C17H35COONa) to form calcium stearate (Ca(C17H35COO)2), water (H2O), and carbon dioxide gas (CO2).

Calcium stearate is a white, waxy substance that is commonly used as a lubricant and stabilizer in various industries, including the production of soaps and cosmetics. Water and carbon dioxide are byproducts of the reaction and are released as gases.

Overall, the reaction between calcium hydrogen carbonate and sodium stearate results in the formation of calcium stearate, which can have various industrial applications.
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G
Google Gemini AI
Jul 2
Reaction between Calcium Hydrogen Carbonate and Sodium Stearate

Calcium hydrogen carbonate (Ca(HCO3)2) and sodium stearate (C18H35O2Na), the main component of soap, undergo a chemical reaction known as metathesis or double displacement reaction.

Chemical equation:

Ca(HCO3)2 + 2C18H35O2Na → CaCO3(s) + 2NaHCO3 + C18H35OH

Steps of the reaction:

1. Ionization: The calcium hydrogen carbonate and sodium stearate dissolve in water, dissociating into their ions:

Ca(HCO3)2 → Ca2+ + 2HCO3-
C18H35O2Na → C18H35O2- + Na+

2. Ion exchange: The calcium ions (Ca2+) from calcium hydrogen carbonate react with the stearate ions (C18H35O2-) from sodium stearate to form insoluble calcium stearate (Ca(C18H35O2)2), which precipitates out of the solution as a white solid.

Ca2+ + 2C18H35O2- → Ca(C18H35O2)2(s)

3. Formation of byproducts: The reaction also produces sodium hydrogen carbonate (NaHCO3) and stearyl alcohol (C18H35OH) as byproducts:

HCO3- + Na+ → NaHCO3
C18H35O2Na + H+ → C18H35OH + Na+

Therefore, the overall reaction results in the formation of calcium stearate (soap scum), sodium hydrogen carbonate, and stearyl alcohol.
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