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The color in KMnO4 arises from an electronic transition, but it is actually not a d-d ... When the light is reflected (or transmitted) it is missing the frequencies of the light absorbed, and so it looks pink.
when H+ is removed from any compound it forms conjugate acid. the addition of H+ ion gives conjugate base.
a) Describe why not all of the organic matter in wastewater is converted to carbon dioxide and water in biological treatment. b) What is the importance of the BOD in the charact
defnition and example
Nitrite rubbers (Gr-A or Buna-N or NBR): Nitrite rubber is prepared by the copolymerization of butadiene and acrylonitrile in emulsion systems. Properties: 1.
in Cr atom the number of electron having n+m=3
construction and working of secondary cell
Q. Describe properties and uses of different silicate glasses and also discuss the importance of annealing in the manufacture of glass.
We are asked to design a qualitative analysis scheme that can be used to determine which cations are present in a solution containing only four of the following cations: Pb2+, Ag+,
examples of the Spontaneous and Non-spontaneous processes
why we consider carbon as standared for atomic mass unit
Mostly compounds of d block elements exibitcolour dueto d-d transistions between partially filled eg and t2gbut the reason for colour of KmnO4 and K2Cr2O7 is due to partial chanrge transfer between central atom and oxygen which causes colour
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