Problem Fact- FeCl3 is stable but FeI3 is highly unstable. Fe forms FeF3 ,FeCl3 and FeBr3, but not FeI3. FeI3 is unstable, decomposes to FeI2 and I2. Cul2 is unstable, decomposes to CuI (Or Cu2I2) and I2. FeCl3 + 3KI = FeI3 + 3KCl ; FeI3 = FeI2 + I2 Fe2O3 + 6HI ⟶ 2FeI2 + I2 + 3 […]
Problem- What are the products formed when benzyl ethyl ether is reacted with HI? Sample Solution- The said ether follows SN1 and hence products are Benzyl iodide and ethyl alcohol.
Problem- Fact- Cr2+ is a reducing agent while Mn3+ is an oxidizing agent in spite of both having d4 configuration. When Cr2+ gets oxidized to Cr3+ (d3), it attains a stable half-filled t2g orbitals but when Mn3+ gets reduced to Mn2+ (d5), it attains a stable half-filled d orbitals. Question– If this is the case, […]
The principle of conductometric titration is based on the fact that during the titration, one of the ions is replaced by the other and invariably these two ions differ in the ionic conductivity with the result that conductivity of the solution varies during the course of titration. Such reaction can be observed by monitoring the […]
Alkanes are inert to normal chemical reactions such as oxidation. Benzene is not affected by alkaline potassium permanganate or chromic acid at room temperature. Industrially benzene is oxidized by using vanadium catalyst at high temperatures to give maleic anhydride. Alkyl side chains attached to benzene rings are more easily oxidised than benzene itself. Alkyl side chains attached to benzene rings are more easily oxidised into benzoic acid. […]
9-Borabicyclo[3.3.1]nonane. [nickname ‘banana borane] 9-BBN can selectively reduce conjugated enones to allylic alcohols. Unlike most dialkylboranes, 9-BBN-H hydroborates alkenes faster than its does the corresponding alkynes. When used in the hydroboration-oxidation reaction, this sterically-hindered organoborane, 9-BBN strongly favors formation of the less highly substituted alcohol product. This colourless solid reagent is used as a highly selective, […]
Unless rings are large enough (Bredt’s Rule), At small bicyclic bridgehead positions, planarity is difficult to attain, in other words, bridgehead carbon cannot have a pure “p” orbital. Hence, Bridgehead free radicals are pyramidal. Bridgehead carbocations are not possible. At bridgehead carbons, the double bond is not possible. Unlike I, II (being a bridgehead olefin) […]