25
votes
Why does bleach feel slippery?
Actually it is saponification. Bleach has alkali added to it, to stabilize it against decomposion to chlorine gas.
To wash your hands after contact with bleach was a wise move.
- 62.4k
24
votes
Accepted
Why does bleach feel slippery?
Maybe it needs to be clarified that the salt of a strong base and a weak acid can conduct saponification. Therefore the fact that bleach reacts with fatty acids creating soap, does not necessarily ...
- 944
8
votes
Producing soap from sodium carbonate and oil
In nature fat is stored as triglycerides (TGs): Three fatty acid (FA) chains bound together by a glycerol backbone. Olive oil is mainly composed of TGs, though it also contains small amounts of free ...
- 471
5
votes
Accepted
Soap equation using potash
Ashes have been thoroughly studied more than $100$ years ago. See the Dictionnaire de chimie (in French) by A. Wurtz, Hachette ed., Paris, 1872, p. 787 - 789. Potassium hydroxyde $\ce{KOH}$ was never ...
- 30k
4
votes
Soap equation using potash
Can somebody help me understand how the soap and the glycerin molecule would look like?
Once you add water, you have potassium ions and hydroxide ions in solution, and the products look the same as ...
- 42.3k
4
votes
Soap equation using potash
Once you introduce water, potassium carbonate can generate potassium hydroxide through the hydrolysis reaction
$\ce{CO3^{2-} + H2O <=> HCO3^- +OH^-},$
and this reaction is fairly efficient ...
- 62.4k
2
votes
How strong (molarity) does NaOH solution need to be to saponify fats?
2.5 M might be a bit strong. 1.0 M is 40 g NaOH per liter of water, or around 4% solution.
Start with 1 % solution and leave it soak. As with oven cleaners, a little heat should help move things ...
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2
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Which one reacts first with NaOH; Triglycerides or FFA?
Triglycerides require nucleophilic displacement of the glycerin component, whereas FFAs require only deprotonation. The latter is much faster.
- 62.4k
1
vote
Accepted
Where do the chloride ions go during saponification precipitation?
Adding a concentrated $\ce{NaCl}$ solution to a soap solution produces the precipitation of sodium alkanoates (indeed it is a mixture of alkanoates and alkenoates). This is a consequence of the law of ...
- 30k
1
vote
Accepted
Molecularity of Saponification Reaction
You should know that the molecularity is not relevant in your case and has no significance for multi-step reactions, it is just applicable to elementary reactions. The relevant parameter for multi-...
1
vote
Accepted
Gelatination of solution in saponification
Sodium stearate is not very soluble in water (above about 2%, it becomes viscous but not a firm gel). Ethanol can reduce the viscosity at first, but sodium stearate is not soluble in ethanol either, ...
- 14.3k
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