Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Electro refining of Copper• Electrolyte - Aqueous copper sulphate solution (acidified)• Cathode - Pure copper metal (thin rod)• Anode - Impure copper metal (thick block)• Dissociation of copper sulphate -
Cathode pure thin sheet of copper lined with graphite so that the deposited copper can be removed easily.Anode blister copper (got above)
Electrode reaction
Copper sulphate dissociates
CuSO4 ------------Cu2+ + SO2-4
H2O -------- H+ +OH
At the cathode the copper ion changes to copper atom by gaining two electrons which get deposited in the pure copper rod.
Cu2+ +2e- ------- Cu
The 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 the electrolytic 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
An example for trihydric phenols
What is the molar mass of solute in the solution of any mass? Ans) Molar Mass is defined and set as a absolute mass for every solute, solvent or sol. et.c It is a particular
What are uses of benzaldehyde
Which orbital is dumb-bell shaped : (1) s -orbital (2) p -orbital (3) d -orbital (4)f -orbital Ans: p -orbital
Simple and Mixed Amines Secondary and tertiary amines may be categorized as simple or mixed amines as per to all the alkyl or aryl groups attached to the nitrogen atom are simi
Q. Show Reduction to Metals? After removed of the gangue, i.e. impurities physically mixed with the metal elements, the concentrated ore becomes ready for the isolation of meta
What happens when complex compounds consist of legand?
Q. What are Independent and dependent variables? An experiment is a set of controlled explanation that tests a hypothesis. In a research a scientist will set up and change on
Explain the Winnowing and Primary processing of wheat Winnowing: In this process, the impurities are separated on the principle that their density differs from that of the
anamolous behavior of berylium
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd