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Q. Show the Colorimetric analysis?
Colorimetric analysis depends on the variation of the colour with the change in concentration of the compound. Usually, absorption of light is measured at different known concentrations of a compound and a graph is plotted between the absorption and concentration. Absorption of an unknown concentration of the compound is then measured and its concentration evaluated from the graph. Thus, 1 ,lo-phenanthroline or 2.2'-bipyridyl which forms coloured complexes with iron, are often used for its determination in fruits, wines, leather and other biological materials. There are many such reagents which are fruitfully employed for the quantitative determination of various metal ions.
SHOW A LABELED SCHEMATIC DIAGRAM OF A SINGLE BEAM ATOMIC ABSORPTION SPECTROSCOPY
How many unpaired electrons are present in Ni 2+ cation (atomic number = 28): (1) 0 (2) 2 (3) 4 (4) 6 Ans: 2
Advantage and disadvantage of westron
Q. What do you mean by Milk Foams? The proteins and water in milk are extended into thin films by agitation. These thin films enclose small air bubbles to make foam in which t
Steam supply for experiments in heat A tin with a press-on lid may be used to make a steam can. Punch two holes in the lid and solder by them one long and one short pip
Experiment on Archimedes' principle Solder a cycle valve to single half of a copper ball tap float. Load inside the other half with lead or lead shot unless the whole just flo
The atom of the element having atomic number 14 should have: (1) One unpaired electron (2) Two unpaired electrons (3) Three unpaired electrons (4) Four unpaired electr
what is alternative form of cholesterol formed in plants and prokaryotes ?
complete assignment for half life determination
Penta valent element has one electron more than 4 electrons which could be used for conduction while the trivalent elements has 1 electron less , this can also be seen as a hole
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