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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.
A bond with maximum covalent character between non-metallic elements is formed: (1) Between identical atoms (2) Between chemically similar atoms (3) Between atoms of wide
Explain the two peaks in the diagram. How can a living cell control the position of the second peak to adapt the properties of its membrane to the demands of life? In blood, li
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How many moles of O2 are produced when 0.400 mol of KO2 reacts in this fashion? 4KO2+2CO2 ----> 2K2CO3+3O2
how to make project on iodoform?
Ask question #MinimName two compound that are covalent when taken pure but produce ions when dissolved in water. um00 words accepted#
how do you calculate the concentration of hcl solution if you are the mass of sodium carbonate and the volume of its solution and the volume of the pipetted solution and the volume
Which of the following is not isoelectronic : (1) Na + (2) Mg 2+ (3) O 2- (4) Cl - Ans:(d)Cl -
Q. What are the properties of water? Ans. Water is a colorless, odorless, tasteless liquid with a melting and freezing point of 0 o C and a boiling point of 100 o C at 1 a
Explain rules of pericyclic The pericyclic selection rules say absolutely nothing about the position of equilibrium in every case. These rules refer to rates of reactions, not
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