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Q. Explain about Preparation of diborane?
Diborane can be prepared in almost quantitative yields by the reduction of boron Tricloride etherate (BF3, 0Et2) with lithium aluminium hydride (LiAIH4,) or sodium borohydride (NaBH4,):
where diglyme is diethyleneglycol dimethyl ether, (MeOCH2,CH2) 20. Diborane can also be prepared by treating NaBH4, with conc. H2SO4 or H3PO4.
What is meant by a link solution ?
State 2nd law of thermodynamics in many forms as possible and show that they are identical in figures?
Q. Why elimination occurs instead of nucleophilic substitution when ethyl chloride reacts with alcoholic potassium hydroxide? Ans: Ethyl chloride can undergo both nucleophilic sub
The radius of first Bohr's orbit for hydrogen is 0.53 Å. The radius of third Bohr's orbit would be: (1) 0.79 Å (2) 1.59 Å (3) 3.18 Å (4)4.77 Å
What are the points to be taken into account to compare the enol %? Ans) Different propositional proof system for theorem proving in propositional logic, like sequent calculus,
Acidic nature of monocarboxylic acids (1) Cause of acidic nature (a) A atom of carboxylic acid may be illustrated as a resonance hybrid of the following structures.
Ethylbenzene Ethylbenzene has a three-proton triplet and, at somewhat greater chemical shift, in the benzylic proton region, a two-proton quartet. p-Xylene has a six-proton si
Q. Explain Collision Theory? Ans. Why do some reactions take place faster than others? What actually happens in a chemical reaction? Consider a gaseous reaction of the typ
Prepare an assignment on the topic commercial cells
Evaporation theory and describe advantages, disadvantages and application?
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