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How does soap react with the salts CaCl2 or MgCl2?
An insoluble salt is formed--commonly called soap scum. Soap is the potassium or sodium salt of fatty acids. When calcium takes the place of the sodium or potassium, a calcium salt is formed. This takes the form of a whitish precipitate.
Organic salt with a structure similar to that of soap?
One example of an organic salt with a structure similar to soap is sodium stearate. It is derived from stearic acid, found in animal and vegetable fats, and behaves like soap in its ability to emulsify oils and water. Sodium stearate is commonly used in cosmetic products and as an emulsifier in food products.
What is the common salt that is present in permanent hard water?
The common salt present in permanent hard water is calcium sulfate (CaSO4) and magnesium sulfate (MgSO4). These salts contribute to the hardness of water by forming insoluble precipitates with soap, leading to the formation of soap scum.
How is soap scum formed?
In water that contains a lot of calcium ions (Ca^(2+)), these ion combine with the stearate/palmate anion of soap, to form calcium palmate or calcium stearate (scum). NB Water that contains a lot of calcium ions is often known as 'hard water'. because it is difficult for soap to lather.
What is the difference between scum and scale?
Scum is created when calcium ions (and or magnesium ions) form an insoluble precipitate with soap. Soap consists of sodium salts of fatty acids. e.g. sodium stearate (aq) + calcium ions (aq) = calcium stearate (s) + sodium ions (aq) Scum is the calcium stearate. Limescale is created when hard water i heated, or when it evaporates. It is formed because calcium hydrogen carbonate is unstable. Ca(HCO3)2 (aq) + heat = Cac03 (s) +H20 (l) +CO2 (g) calcium hydrogen carbonate + heat = calcium carbonate + water + carbon dioxide
Is calcium stearate a soap or a salt?
Soaps are usually salts of long chain fatty acids with Sodium or Potassium ion and are soluble in water but Calcium stearate is very slightly soluble in water so can not be used as soap so it is better to consider it as a salt only.
Which reaction results in the production of soap?
In hard water we find Calcium and Magnesium ions. These react with the Sodium stearate (soap) to form Calcium and magnesium stearate and Na+ ions Sodium stearate+ Ca2+ +Mg2+ --> Calcium stearate + Magnesium stearate + Na+ ions
What is the chemical formula for Calcium Stearate?
Calcium stearate is carboxylate of calcium that is found in some lubricants and surfactants. It is a white waxy powder. It is produced by heating stearic acid, a fatty acid, and calcium oxide. It is also formed when sodium stearate is added to hard water (as scum). Sodium stearate + CaSO4 -----> C36H70CaO4 + Na2SO4 OR Sodium stearate + Ca(HCO3)2-------------> C36H70CaO4 + NaHCO3 Anyway, just wanted to refresh your memory a little bit... The formula is, as mentioned earlier : C36H70CaO4 Oh, and sodium stearate's just a fancy word for soap...
What is the structural formula for sodium stearate a type of soap?
The structural formula for sodium stearate, which is a type of soap, is CH3(CH2)16COONa. This formula represents the sodium salt of stearic acid, which is a long-chain fatty acid commonly found in soap formulations.
What is the difference between soap and shower gel?
Soap is primarily sodium stearate. It leaves a film when it combines with hard water to form calcium stearate (soap scum). Body wash is a detergent that does not form soap scum. It, like Zest bath bars has no sodium stearate. The difference between the Zest and most body washes is the fragrance in the recipe and that you are paying for a whole lot of water and a fancy bottle.
What is the advantage of detergents compared to soaps?
One advantage is that detergents do not react with hard water to form soap scum (Calcium stearate) like soap does.
Reaction of soap with dissolved calcium chloride?
Calcium chloride is a type of salt. When dissolved and mixed with soap, it will form a white film commonly known as soap scum.
Equation showing the formation of scum when soaps are dissolved in hard water?
When soaps are dissolved in hard water, a scum is formed due to the reaction between the soap molecules and the calcium and magnesium ions present in the water. The reaction forms insoluble calcium and magnesium salts of the fatty acids in the soap, which precipitate out as a scum. This scum is difficult to dissolve in water and can cling to surfaces, causing the typical "soap scum" seen in hard water environments.
How do you make calcium soap?
Calcium soap is typically made by reacting a fatty acid with calcium hydroxide, which is a base. The reaction results in the formation of calcium soap and glycerol, which is a byproduct. The calcium soap is then separated and purified for various uses, such as in lubricants or cosmetics.
How does soap react with the salts CaCl2 or MgCl2?
An insoluble salt is formed--commonly called soap scum. Soap is the potassium or sodium salt of fatty acids. When calcium takes the place of the sodium or potassium, a calcium salt is formed. This takes the form of a whitish precipitate.
What brand of hand soap has glycol stearate?
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What is the balance equation of calcium oxide and stearic acid?
Calcium oxide + Stearic Acid = Calcium Stearate + Water CaO + 2C18H36OOH = (C18H36OO)2Ca + H2O NB CAlcium stearate is the 'scum' that can appear on the side of a bath, when washing in 'hard' water.
