Chembio

No. I have been given a project to determine the iron content in Sulphuric acid. And i'm searching for a replacement for Br2.

What is the role of Bromin in determination of ferric ions in battery acid using comlexation of ferric ions with thiocyanate????

It is not the case always..... the slag contains 6% Lead ad 60% Iorn. I'm searching a method to extract lead from this composition....This is one of my assingment for my industrial training...I went through an article pulished by a Journal, ( Journal of Hazardous Materials). but it provides a qualitative method.... I'm interested in a quantitative metohd which can be applied in an industrial base...

can any one please sugest a method to extract lead from slag!!!!!

You better check in Advanced Inorganic Chemistry by Cotton and Wilkinson to find a better answer for it.....

Can anyone please help me to find a proper book (online) which gives a detailed description about the TANABE SUGANO diagrams????

I don't think there exist anything called ".semi safe to breathe." Every thing has some hazardous effect on us in different potentials... I think better avoid inhaling anything that comes out of the reaction vessel.....

What is the modification of WADE'S rule upon deriving the structure of metal cluster boranes???

Can anyone please tell me what is the largest class of Silicates??

Yes, but i was not sure with it. Thanx a lot.

I think you will find a good answer in the Atkins'Physical Chemistry by P.Atkins and Julio De Paula. Merged post follows: Consecutive posts merged Also you can use this link http://en.wikipedia.org/wiki/Michaelis%E2%80%93Menten_kinetics:-)

It's simple, it is the acetate anion, [CH3COO]−, is a carboxylate. It is the conjugate base of acetic acid. CH3COOH ⇌ CH3COO− + H+

Thank you for your attempt... but i really wanted to know about how the reaction mechanism goes... I know it is a Diels Alder reaction and also that there is a Carbon monoxide evolution... All i want to know is this is correct or are there any other possibilities???

can any one please tell me how does tetraphenyldihydrophthalic anhydride is formed from tetraphenylcyclopentadienone and maleic anhydride in the presence of bromobenzene?? Is it a kind of a Diels Alder Reaction?? And what is the role of bromobenzene??

Yes a lot.. thank you very much..

no i'm not talking about the final product. My question is on the amide proton in phthalimide. Insted of attacking one of the carbonyls by the hydroxide ion won't it abstract the amide proton in phthalimide to initiate the reaction..

thank you very much... it helped me a lot.. Got a one single question.. How about the acidic proton which is attached to the nitrogen atom. will it be stable in a basic medium...

phthalimide has two sites which are electrophilic, Carbonyl carbon and the nitrogen center with an acidic hydrogen. So when a nucleophile as OBr- or OH- is to attak where will it attack first??

Can any one please how the HOFMANN rearrangement takes place in phthalimide ( isoindole-1,3-dione) in order to give 2-aminobenzoic acid? ( the reaction mecahanism)

I think it can be both, Cl2 gas as well as O2 gas. You have to look in to the oxidation potentials of Cl- ions and H2O2.

A mole is not just no. of atoms or molecules in a substance.A mole can be defines as a chemical mass unit, defined to be 6.022 x 1023 molecules, atoms, or some other unit. The mass of a mole is the gram formula mass of a substance. gram formula or atomic mass of CuO is 79.545 g/mol and that is of Ta2O5 is 441.893 g/mol, Cu=53.55g/mol and Ta=180.95g/mol No. Of. Moles of a substance = Mass of that substance in grams/gram formula mass of that substance I think you can do it further..... Good luck for your Xams....

Normally in most of the cases the counter ion is bonded to the complex through ionic bonds. And the square brackets separates the ligands in the inner coordination sphere. I think when upon dissolution in water the counter ion will dissociates easily, and even the ligands with in the square brackets also may get replaced by the water molecules in order to establish an equilibrium. And this replacement of ligands depends on the metal center, it's oxidation state, it's LFSE, and also the ligand that is being replaced... <<<For more details on this refer to ADVANCED INORGANIC CHEMISTRY by COTTON & WILKINSON>>>> Hope this will help you....

I think bad chemicals should include benzoyl chloride at the top... And of course concentrated ammonia...

Thank you very much.. I'll go with that...