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Explain, why [Co(NH3)6]3+ ion is low spin? Calculate number of unpaired electrons and write the geometry of [Co(NH3)6]3+.
Concept: Theories of Bonding in Complexes
Distinguish between SN1 and SN2 mechanism of substitution reaction.
Concept: Chemical Properties
Explain optical isomerism in 2-chlorobutane.
Concept: Optical Isomerism in Halogen Derivatives
Write IUPAC name of the product ‘B’ in the following reaction sequence.
\[\ce{C2H5OH ->[NaBr/H2SO4][\Delta] A ->[Nal][acetone]B}\]
Concept: Uses and Environmental Effects of Some Polyhalogen Compounds
Give reason. Though alkyl halides are moderately polar, they are insoluble in water.
Concept: Methods of Preparation of Alkyl Halides
Explain primary benzylic halide shows higher reactivity by SN1 mechanism than other primary alkyl halide.
Concept: Chemical Properties
What is Grignard reagent? How is it prepared? Why are they prepared under anhydrous condition?
Concept: Methods of Preparation of Alkyl Halides
What is the action of following on ethyl bromide?
\[\ce{Mg}\] in dry ether
Concept: Reaction with Active Metals
What is the action of the following on ethyl bromide?
silver acetate
Concept: Hydrocarbons: Alkanes >> Reactions of Haloalkanes - Nucleophilic Substitution Reactions
What is Grignard reagent?
Concept: Hydrocarbons: Alkanes >> Reactions of Haloarenes - Nucleophilic Substitution
What is metamerism?
Concept: Alcohols, Phenols and Ethers >> Nomenclature
How is phenol converted into the following?
benzoquinone
Concept: Alcohols, Phenols and Ethers >> Nomenclature
Arrange the following in decreasing order of acid strength.
CH3OH, CH3–CH2–OH, CH3–CH(OH)–CH3, (CH3)3–C–OH
Concept: Alcohols and Phenols
Write the reaction involved in the preparation of phenol from benzene sulphonic acid.
Concept: Alcohols and Phenols
Compound ‘A’ with molecular formula C6H5Cl is fused with NaOH at high temperature under pressure to give compound ‘B’. Compound ‘B’ on treatment with dil.HCl gives compound C having characteristic carbolic odour. Write the chemical equations in support of this. Name the process and give uses of compound C.
Concept: Uses of Alcohols, Phenols and Ethers
Write a chemical reaction for the following conversion:
Acetic acid into ethyl alcohol.
Concept: Alcohols, Phenols and Ethers >> Nomenclature
What is metamerism?
Concept: Alcohols, Phenols and Ethers >> Nomenclature
How is phenol converted into the following?
benzoquinone
Concept: Alcohols, Phenols and Ethers >> Nomenclature
Write a chemical reaction for the following conversion:
Acetic acid into ethyl alcohol.
Concept: Alcohols, Phenols and Ethers >> Nomenclature
What is metamerism?
Concept: Alcohols, Phenols and Ethers >> Nomenclature
