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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 of Halogen Derivatives
Explain optical isomerism in 2-chlorobutane.
Concept: Optical Isomerism in Halogen Derivatives
Give reason. Though alkyl halides are moderately polar, they are insoluble in water.
Concept: Methods of Preparation of Alkyl Halides
Explain optical activity of 2-chlorobutane.
Concept: Optical Isomerism in Halogen Derivatives
Explain primary benzylic halide shows higher reactivity by SN1 mechanism than other primary alkyl halide.
Concept: Chemical Properties of Halogen Derivatives
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: Reactions of Haloalkanes - Nucleophilic Substitution Reactions
What is Grignard reagent?
Concept: Reactions of Haloarenes - Nucleophilic Substitution
What is metamerism?
Concept: Nomenclature of Alcohols, Phenols and Ethers
How is phenol converted into the following?
benzoquinone
Concept: Nomenclature of Alcohols, Phenols and Ethers
Arrange the following in decreasing order of acid strength.
CH3OH, CH3–CH2–OH, CH3–CH(OH)–CH3, (CH3)3–C–OH
Concept: Preparation of Alcohols and Phenols
Write the reaction involved in the preparation of phenol from benzene sulphonic acid.
Concept: Preparation of 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: Nomenclature of Alcohols, Phenols and Ethers
What is the action of bromine water on carbolic acid?
Concept: Phenols >> Methods of Preparation
How carbolic acid is prepared from benzene sulphonic acid ?
Concept: Phenols >> Phenols
How is phenol prepared from cumene?
Concept: Phenols >> Methods of Preparation
How will you obtain the following? (Give balanced equation.)
Ethyl chloride from diethyl ether.
Concept: Ethers >> Physical and Chemical Properties of ether
