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Explain about Parke Process?
Parke method for refining lead, which is also a concentration process for silver, relies upon the selective dissolution of silver in molten zinc. Small amount of zinc, 1-2%. is included to molten lead which contains silver as an impurity. Silver is much more soluble in zinc than in lead; zinc adn lead are insoluble in each other. Therefore, most of the silver concentrates in zinc, which comes to the top of molten lead. The zinc layer solidifies first upon cooling: it is replaced and silver is obained by distilling off zinc, which is collected and used over and over again.
I read that in the first transition series,the stability of +2 oxidation state decreases from Sc to Cu.but,I observed that as we move along the 3d -series,the stability increases i
Q. Describe about Halide Minerals? Highly electropositive alkali and alkaline earth metals tend to form halide salts, which being soluble in water are washed away into the ocea
Ask Dear Sir Greetings Please be informed that I am an expert in Beekeeping at my Univ. We are intending to open new Dept. under the name under Honey Bee Dept. Consequently, we ne
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the measured dipole moment of-para nitroaniline (6.2D) is larger than the value calculating using empirical group moment (5.2D)
why HOH is not harmful to our body but Phenol is?
Explain the following and give one example of each: a. Tranquillizers b. Mordant c. Hybrid rocket propellants
If hydrogen atom is in an energy level represented by n=4,how many spectral lines are possible in its emission spectrum? Ans) There is a formula for this i.e [ (n 2- n 1 +1)
importance of chemistry in computer engineering
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