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Electro refining of Copper
Cathode pure thin sheet of copper lined with graphite so that the deposited copper can beremoved easily.Anode blister copper (got above)Electrode reactionCopper sulphate dissociatesCuSO4 ------------Cu2+ + SO42-H2O -------- H+ +OHAt the cathode the copper ion changes to copper atom by gaining two electrons whichget deposited in the pure copper rod.Cu2+ +2e- ------- CuThe sulphate ion and hydroxide ion move towards anode but none of them is discharged.The copper anode itself loses electrons and gives copper ion in the solution.At the anode Cu - 2e------- Cu2+The impure block of copper thus will be used The impurities settles at the bottom of theelectrolytic cell. This is known as anode mud or slime.The impurities iron, zinc etc ionize and dissolves in the copper sulphate solution. They are above copper in the activity series. So they can displace copper from copper sulphate solution.The weight of cathode will increase. The copper obtained is 100%pure.e
second objection of kekule struture
properties of trihydric alcohol.
The tendency to metal to lose electrons or tendency of its ions to gain electrons depends upon the concentration of the ions in solution. At the same time, the tendency to lose or
The radius of the nucleus is related to the mass number A by : (1 )R= R 0 A 1/2 (2) R= R 0 A (3) R= R 0 A 2
Draw the structures of white phosphorus and red phosphorus. Which one of these two types of phosphorus is more reactive and why?
1. why YbS and YbI2 are semiconducting solids but LaS and LaI2 show metallic character. 2. Why is aqueous solution of Eu2+ thermodynamically less susceptible to oxidation than any
What are the different mechanism to produce methanol(CH3OH)?
I am new to Biochem.I do have multiple questions. Do you think signing up will help
what is allen compound
Use the given data to construct a thermodynamical Born-Haber-cycle of the formation of potassium chloride from its elements and calculate the lattice energy of potassium chloride.
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