Modified True or False. Write correct if the statement is True and if false write the word/s that make it false and beside it write the word/s that will make the statement true. 4. Lone pair delocalization decreases the positivity of carbonyl carbon. 5. The longer the carbon chain, the higher the boiling point. 6. sp3 is 75% p character and this allows C-H hyper conjugation
Classes Of Functional Groups
Organic Chemistry deals mostly with carbon and hydrogens, also called hydrocarbons, but those groups which replace hydrogen and bonds with carbon to give a characteristic nature, unique of their own, to the hydrocarbon they are attached to, are called functional groups. All the compounds belonging to a functional group undergo reactions in a similar pattern and are known to have similar physical and chemical properties.
Characteristics Of Functional Groups
In organic chemistry, we encounter a number of special substituent groups which are attached to the hydrocarbon backbone. These groups impart certain characteristics to the molecule of which it is a part of and thus, become the highlight of that particular molecule.
IUPAC Nomenclature
In Chemistry, IUPAC stands for International Union of Pure and Applied Chemistry which suggested a systematic naming approach for the organic and inorganic compounds, as in the beginning stage of nomenclature one single chemical compound was named in many ways by which lead to confusion. The need for this approach aroused as the number of chemical compounds newly discovered were increasing (approximately 32 million compounds) and the basic concept of nomenclature i.e. the trivial nomenclature and the derived system of nomenclature failed to overcome the challenge. It is an important task to name a chemical compound systematically and unambiguously which reduces lots of confusion about the newly reported compounds.
Modified True or False. Write correct if the statement is True and if false write the word/s that make it false and beside it write the word/s that will make the statement true.
4. Lone pair delocalization decreases the positivity of carbonyl carbon.
5. The longer the carbon chain, the higher the boiling point.
6. sp3 is 75% p character and this allows C-H hyper conjugation.
7. The higher the electronegativity, the higher the temperature needed to break bonds.
8. Steric effect increases the boiling point.
9. Stearic effect increases the Van der Waals forces.
10. Lone pair delocalization decreases the positivity of carbonyl carbon.
11.
12. The stronger the Van der Waals forces between molecules of the same substance, the
more soluble the substance is in water.
13. The longer the carbon chain, the lower the solubility of the substance in water.
14.
15. Stearic effects enhances the solubility in water.
16. H-bond can exist between functional groups in a single molecule.
17. The solubility of short-chained alcohols in water is explained by H-bonding.
18. Lone pair delocalization does not happen in nitrogen-containing compounds because of
the absence of lone pairs in a nitrogen atom.
19. Lone pair delocalization require atoms with lone pairs.
20. Lone pair delocalization require atoms with lone pairs.
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