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What is the structure of a representative soap molecule?
Alkali metal attached to a fatty acid. Some alkali metals are: Lithium, Sodium, Potassium. The alkali metal end dissolves in water and the fatty acid end dissolves in oils and some dirt, making it possible for the water to wash off the oil and dirt.
How is sodium stearate is able to dissolve grease?
Sodium stearate soap,C^17H^35COO-Na+ , is the sodium salt of a long chain saturated fatty acid called stearic acid,C^17H^35COOH. It has a long alkyl group C^17H^35 and an ionic carboxylate group COO-Na+. Long hydrocarbon part is hydrophobic so it is soluble in oil and grease. The ionic part is hydrophillic so it is soluble in water. When this soap is dissolved in water it forms a colloidal suspension in water in which the soap molecules cluster together to form spherical micelles. In it , soap molecules are arranged radially with hydrocarbon part ends directed towards centre and the ionic part ends directed towards outside. When dirty cloth is immersed in this water the hydrocarbon ends attaches with the oil and grease and ionic part dissolves in water. When the dirty clothes are agitated in soap solution then the oily and greasy particles entrapped by soap molecules gets dispersed in water due to which the soap solution becomes dirty and the clothes becomes clean.
How does soap work with water to remove oily dirt?
Soap contains particles that have a polar end and a non-polar end. These particles are able to attach to oil particles and to water particles, enabling the oil to dissociate in the water and disperse. In this way, soap acts as an emulsifying agent.
How does soap remove an oil spot?
Soap is an emulsification agent. Soap has two molecules at one end it has a group of atoms that are non polar and at the other end is a group of polar atoms. When combined one group attaches to oils, while the other group pulls out the water, lifting the oil.
Can soap be dissolved in water?
Oil is insoluble in water (insoluble means it does not dissolve).
How can you make salt dissolvable in oil?
Salt will dissolve in oil very slightly but not truly. salt is an ionic compound (it has a positive/negative side) and oil is usually covalent (there is no charge). The rule for solubility of compounds is that like dissolves like, so ionic dissolves ionic and covalent dissolves covalent.
Why does the tail end of the detergent molecule dissolves in oil while the head dissolves in water?
gawa din assignment
What is the structure of a representative soap molecule?
Alkali metal attached to a fatty acid. Some alkali metals are: Lithium, Sodium, Potassium. The alkali metal end dissolves in water and the fatty acid end dissolves in oils and some dirt, making it possible for the water to wash off the oil and dirt.
Does petrol dissolve oil?
Water is a polar molecule, and therefore dissolves other polar substances and many ionic compounds because of its partially positive hydrogen end and its partially negative oxygen end. However, petrol is a nonpolar substance and only dissolves other nonpolar substances.
Why is soap a compound?
The reaction to make soap is not ionic, it is a hydrolysis. The soap itself is the salt of a fatty acid, and is therefore ionic in nature at the carboxylate site.
Soap can remove grease and oil from your skin because it acts as what?
Soap can remove grease and oil from your skin because it acts as an emulsifying agent. When mixed with water, soap can clean the skin because it suspends oils and dirt so that this can be removed easily. By itself, water cannot remove oil or grease from skin.
How do separate soap from salt?
Soap acts as an emulsifying agent. An emulsifier is capable of dispersing one liquid into another immiscible liquid. Nearly all compounds fall into one of two categories: hydrophilic and hydrophobic. Water and anything that will mix with water are hydrophilic. Oil and anything that will mix with oil are hydrophobic. When water and oil are mixed they separate, which is why hydrophilic and hydrophobic compounds just do not mix. When grease or oil is mixed with a soap- water solution, the soap molecules work as a bridge between polar water molecules and non-polar oil molecules. It doesn't separate them -- in fact, it does the opposite. Soap allows water and oil to mix.See the Related Questions to the left for more information about how soap works.
How is sodium stearate is able to dissolve grease?
Sodium stearate soap,C^17H^35COO-Na+ , is the sodium salt of a long chain saturated fatty acid called stearic acid,C^17H^35COOH. It has a long alkyl group C^17H^35 and an ionic carboxylate group COO-Na+. Long hydrocarbon part is hydrophobic so it is soluble in oil and grease. The ionic part is hydrophillic so it is soluble in water. When this soap is dissolved in water it forms a colloidal suspension in water in which the soap molecules cluster together to form spherical micelles. In it , soap molecules are arranged radially with hydrocarbon part ends directed towards centre and the ionic part ends directed towards outside. When dirty cloth is immersed in this water the hydrocarbon ends attaches with the oil and grease and ionic part dissolves in water. When the dirty clothes are agitated in soap solution then the oily and greasy particles entrapped by soap molecules gets dispersed in water due to which the soap solution becomes dirty and the clothes becomes clean.
Why does soap join oil and water?
Soap is a combination of a non-polar hydrocarbon chain (tail), and a very polar head. The non-polar tail (no free electrons, balanced bonds) section of the soap interacts with the oil. The polar head (free pairs of electrons in the chemical bonds, ionic or unbalanced bonds) dissolves in the water. Many descriptions indicate that the soap forms micelles around the oil with the non-polar tails pointing inward interacting with the oil, and the polar heads outwards interacting with the water... thus insulating the oil from the water. Since this was in science experiments, it would be an interesting project to make a batch of lye soap using cooking oil, lard, or shortening, and lye (sodium hydroxide) and water. Instructions are on the WWW. LYE is dangerous and must be handled with caution and with parental guidance.
How does soap work with water to remove oily dirt?
Soap contains particles that have a polar end and a non-polar end. These particles are able to attach to oil particles and to water particles, enabling the oil to dissociate in the water and disperse. In this way, soap acts as an emulsifying agent.
Why ionic compounds are insoluble in non-aqeous solvents like petrol or kerosine oil?
non aqeous solvents like petrol and kerosine are having long carbon chains and both the end r having non polar groups generally. so there is no separation of charges in them to incorporate the ionic compounds in them........ answer 2...like dissolves like... ;)
Does salt contain oil?
Table Salt is Sodium Chloride (NaCl), an ionic compound. It does not contain oil, nor does it dissolve well in oil. However, "salt" is a generic term which describes an ionic bonded compound with an electro-positive part such as Sodium (Na+) and an electronegative part (Cl-). Many natural oils such as vegetable oil or lard have an carboxylic acid as part of it. One can make soap by mixing a natural oil with water and sodium hydroxide (Lye) or Potassium Hydroxide (Potash). This creates a "salt" with the oil which dissolves in water, and is able to capture oils. So... natural soaps are salts that contain oils.
