Review & Preview Analyze the Lewis structure for oleic acid, the molecule that makes up vegetable oil. Oleic Acid 2A 38 4B 5B 68 78 88 98 10B 11B 128 5 6 7 . • # V & Me Is it polar or nonpolar? CITE EVIDENCE from the Lewis structure to support your claim. 3A 4A SA 6A 7A 17 36 # 2 282 57 EA E AARAAAAAAAAAAAA88 CABRA 161 162 HELM BO 124143 SABRE Me In this macroscopic view, vegetable oil floats on top of water in a glass. Does this observation evidence support your assignment of the polarity of oleic acid? WHY OR WHY NOT?
Formal Charges
Formal charges have an important role in organic chemistry since this concept helps us to know whether an atom in a molecule is neutral/bears a positive or negative charge. Even if some molecules are neutral, the atoms within that molecule need not be neutral atoms.
Polarity Of Water
In simple chemical terms, polarity refers to the separation of charges in a chemical species leading into formation of two polar ends which are positively charged end and negatively charged end. Polarity in any molecule occurs due to the differences in the electronegativities of the bonded atoms. Water, as we all know has two hydrogen atoms bonded to an oxygen atom. As oxygen is more electronegative than hydrogen thus, there exists polarity in the bonds which is why water is known as a polar solvent.
Valence Bond Theory Vbt
Valence bond theory (VBT) in simple terms explains how individual atomic orbitals with an unpaired electron each, come close to each other and overlap to form a molecular orbital giving a covalent bond. It gives a quantum mechanical approach to the formation of covalent bonds with the help of wavefunctions using attractive and repulsive energies when two atoms are brought from infinity to their internuclear distance.
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