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Asked on 7th December
Question : Which shape of SF4 is more stable : I or II?
Answer : The structure (I) is more stable because repulsion is least when the lone pairs are
at equatorial position. Reference : Shapes of molecules are discuessed in
Asked on 5th November
Practice Questions Series [#7 Carboxylic Acids] :
We shared a link that contains some important questions (and answers) on "carboxylic acids". You can study them here :
on Carboxylic Acids.
Asked on 22nd October
Practice Questions Series [#6 Aldehydes and Ketones] :
We shared a link that contains some important questions (and answers) on "aldehydes and ketones". You can study them here :
on Aldehydes and Ketones.
Asked on 16th October
Practice Questions Series [#5 Ethers] :
We shared a link that contains some important questions (and answers) on ethers. You can study them in
Asked on 9th October
Practice Questions Series [#4 Alcohols and Phenols] :
We shared a link that contains 15 important questions (and answers) on alcohols and phenols. You can study them in
on Alcohols and Phenols.
Alkyl halides undergo β-elimination with alcoholic KOH; therefore, ?a must be propene.
Alkenes react with HBr in the presence of peroxides to give haloalkanes according to anti-markovnikov's rule; therefore,
?b must be bromopropane.
Alkyl halides react with Na in the presence of dry ether to give alkanes with twice the number of carbon atoms present in the
alkyl halide; therefore, ?c must be hexane.
This reaction is known as Wurtz reaction.
Question : What is the IUPAC name of this compound?
Answer : When a chain terminating functional group such as COOH, CHO appears more than two times in the parent
chain, then their carbons are not included while numbering the parent chain. Hence, the IUPAC name of the above compound is :
Notice that the suffix 'carboxylic acid' is used in this case and not 'oic acid'. This compound is also known as citric acid.
Question : In the following compound, there is a hydrogen bond between nitrogen and hydrogen atoms (represented by
dotted lines). Do you know if the bond is intermolecular hydrogen bond or intramolecular bond.
Answer : In intermolecular hydrogen bond, the hydrogen bond is formed between atoms of two different molecules.
Example : Hydrogen bond between two different H2O molecules. In intramolecular hydrogen bond, the hydrogen
bond is formed between atoms of the same molecules.
Hence, the hydrogen bond in the asked compound is intramolecular hydrogen bond.