noble gases
... 43. The oxidation state of chromium in the final product formed by the reaction between KI and acidified potassium dichromate solution is a. +4b. +6 c. +2 d. +3 Ans : d K2Cr2O7 is reduced to chromic sulphate, Cr2(SO4)3 in which chromium is in +3 state Vikasana - CET 2012 ...
... 43. The oxidation state of chromium in the final product formed by the reaction between KI and acidified potassium dichromate solution is a. +4b. +6 c. +2 d. +3 Ans : d K2Cr2O7 is reduced to chromic sulphate, Cr2(SO4)3 in which chromium is in +3 state Vikasana - CET 2012 ...
Document
... electronic interactions between the d-electrons, the calculations done using this diagrams are more accurate, However, as there are only 2 more electrons in a d3 complex, the interactions are neglicible, but there is small difference between the values calculated by the first method and the second m ...
... electronic interactions between the d-electrons, the calculations done using this diagrams are more accurate, However, as there are only 2 more electrons in a d3 complex, the interactions are neglicible, but there is small difference between the values calculated by the first method and the second m ...
2016 - Specimen Paper 4 - Cambridge International Examinations
... Permission to reproduce items where third-party owned material protected by copyright is included has been sought and cleared where possible. Every reasonable effort has been made by the publisher (UCLES) to trace copyright holders, but if any items requiring clearance have unwittingly been included ...
... Permission to reproduce items where third-party owned material protected by copyright is included has been sought and cleared where possible. Every reasonable effort has been made by the publisher (UCLES) to trace copyright holders, but if any items requiring clearance have unwittingly been included ...
pcc-sio2.alcohol.oxi..
... overoxidation is avoided using Swern conditions, the annoying odor of by-products and troublesome removal of DMSO may make the purification of products lengthy. The anhydrous conditions maintained by a PCC/silica gel oxidation serve to minimize the formation of carboxylic acids as products of the si ...
... overoxidation is avoided using Swern conditions, the annoying odor of by-products and troublesome removal of DMSO may make the purification of products lengthy. The anhydrous conditions maintained by a PCC/silica gel oxidation serve to minimize the formation of carboxylic acids as products of the si ...
Hinkley groundwater contamination
The town of Hinkley, California, located in the Mojave Desert, (about 121 miles driving distance north-northeast of Los Angeles) had its groundwater contaminated with hexavalent chromium starting in 1952, resulting in a legal case against Pacific Gas & Electric (PG&E) and a multi-million-dollar settlement in 1996.The legal case was dramatized in the film Erin Brockovich, released in 2000.