Messages posted by rtrikha

Every topic is important as you are in a class which is a base of Competitive exams. Make short notes and mark your weakness and pay little more attention on that

study with positive attitude. Nothing is hard when your determination is Strong and positive

All the best

Fructose is

HO₂HC -- C=O --- (C^*HOH)₃---- CH₂OH

So the number of Chiral carbon (* marked) are THREE(3)

http://ochem.jsd.claremont.edu/movies.dir/pre_substitution.htmuse this link this is video tutorial and u need quick time player installed

morrison byod is good but you can go for o.P.Aggarwal also that is also very good

Aromatic bases

are

aromatic

compounds that carry a nitrogen with a free lone pair and behave as

bases

similar to amines

Aromatic amines are weaker bases as compared to ammonia. Electron releasing groups like - CH ₃ , -OCH ₃ , NH ₂ etc., increase the basic strength

Raney nickel (generically termed sponge nickel) is a high surface area solid catalyst composed of fine grains of nickel. Developed in 1926 by Murray Raney¹ as an alternative catalyst for the hydrogenation of vegetable oils, it is now commonly used as a heterogeneous catalyst in many organic synthesis processes – mainly in hydrogenation reactions.

Traditionally, the catalyst is prepared by alloying nickel and aluminium (usually in a 50:50 wt% ratio), crushing the ingot into a powder and then leaching out the aluminium with alkali to leave finely divided porous nickel.² This remaining structure has a large surface area, which gives it a high catalytic activity. Other metals that can be processed in a similar way are copper, cobalt, iron, silver and platinum.

Schiff's Nitrometer is used in determining the quantity of nitrogen gas eveolved during estimation of Nitrogen by DUMA's METHOD. as per apparatus shown below

Aluminium oxide is amphoteric. It has reactions as both a base and an acid.

Reaction with acids

Aluminium oxide contains oxide ions and so reacts with acids in the same way as sodium or magnesium oxides. That means, for example, that aluminium oxide will react with hot dilute hydrochloric acid to give aluminium chloride solution.

In this (and similar reactions with other acids), aluminium oxide is showing the basic side of its amphoteric nature.

Reaction with bases

Aluminium oxide has also got an acidic side to its nature, and it shows this by reacting with bases such as sodium hydroxide solution.

Various aluminates are formed - compounds where the aluminium is found in the negative ion. This is possible because aluminium has the ability to form covalent bonds with oxygen.

i will start replying questions and posting articles in 2-3 days

i will start replying questions and posting articles in 2-3 days

i will start replying questions and posting articles in 2-3 days

Find the number of lone pair (nonbonding) electrons by subtracting the bonding electrons from the valence electrons . Arrange these around the atoms until all of them satisfy the octet rule: Remember,

ALL elements EXCEPT hydrogen want eight electrons around them, total.

Hydrogen only wants two electrons.

The time-dependent, chemically reacting, viscous fluid dynamics within the chemical oxygen-iodine laser (COIL) flowfield are simulated using the unsteady, laminar, multi-component Navier-Stokes equations. The solutions of these equations are generated within simulations of COIL hardware at standard operating conditions; conditions predicted in previous simulations to be unsteady. These current simulations ascertain the effect of the flow unsteadiness upon the laser gain through Doppler broadening of the spectral lineshape induced by the bulk movement of the gas. The results from the simulations demonstrate that the presence of bulk flow rotation associated with the unsteady vortex generation influences the temperature determined from the resulting lineshapes; this result has direct implications for experiments where spectroscopically measured lineshapes are utilized to determine flow temperatures. Additional simulations are used to test varying fidelity within the COIL finite-rate chemistry mechanism in the presence of the flow unsteadiness and H₂O vapor condensation. The same unsteady, laminar, multi-component Navier-Stokes simulation methodology is applied to new COIL mixing nozzle concepts with the goal of utilizing the unsteadiness flow to improve device performance. Experimental planar laser induced iodine fluorescence data for these nozzle concepts are directly compared to simulation data in a newly developed methodology for COIL model validation.

O.state of S in +6 and this acid is also known as Peroxymonosulfuric acid, also known as persulfuric acid, peroxysulfuric acid, or as Caro's acid. In this the S(VI) center adopts its characteristic tetrahedral geometry; the connectivity is indicated by the formula HO-O-S(O)₂-OH

Benzene Sulphonyl Chloride

if ur AIR is 3713 than in first rank than in first counselling u have chances in following

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