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Q. Distribution coefficients of the salts?
The distribution coefficients of the salts of lanthanide elements between organic and water solvents are slightly different. Thus, the individual elements are selectively extracted from aqueous solutions of their salts into an organic solvent. This technique of separation is define as solvent extraction. Tributyl phosphate is a very good solvent for this process. The solubility of lanthanides in +3 oxidation state in tributyl phosphate increases with atomic number. Separation is performed by using a continuous counter-current process in which the aqueous solution of lanthanide nitrates and the solvent are passed through a column continueusly in opposite directions. This process is much less tedious than performing several crystallisations.
which of the following is not a characteristic of plunck''s quantum theory of radiation? A) Radiation are associated with energy B) A body can emit less or more than a quantum of e
Q. Determine the fat content in the given sample of milk? After undertaking this activity, you will be able to: • explain the technique of determination of the total fat c
Composition of hydrocarbon (i) Alkanes: found 30 to 70% consist of upto 40 carbon molecule. Alkanes are mainly linear chain but some are branched chain isomers. (ii) Cycloal
Q.give characterstics of matter?
Molecular weight of orthophosphoric acid is M. Its equivalent weight is
1. For what fraction of annual CO 2 emissions from fossil fuel burning are automobiles responsible? 2. A 1000-kg car travels 1.6 × 10 4 km/yr. What is the ratio of the mass of
When the principal quantum number(n= 3) , the possible values of azimuthal quantum number(l ) is: (1) 0, 1, 2, 3 (2) 0, 1, 2 (3) - 2, - 1, 0, 1, 2
Threshing The process of threshing separates the kernels from the stalks or panicles on which they grow. Threshing may take place in the field, or at the homestead or village;
For">http://imageshack.us/photo/my-images/213/chemistyr.png/ For these structures? I''m not sure how to answer it.
Br2(g)=2Br(g) dG=161.69KJ/mol at 298.15K Find kc and kp.
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