Advertisements
Advertisements
प्रश्न
How would you change Cu2+ ion to Cu?
Advertisements
उत्तर
By supplying two electrons to Cu2+ or by loss of 2 electrons.
\[\ce{Cu^2+ + 2e- -> Cu}\]
APPEARS IN
संबंधित प्रश्न
Give one word or phrase for the following:
Electrolytic deposition of a superior metal on a baser metal.
Out of Cu and Ag, which is more active?
Give reason for the following:
The blue colour of aqueous copper sulphate fades when it is electrolysed using platinum electrodes.
Give reason for the following:
For electroplating with silver, silver nitrate is not used as an electrolyte.
Give three applications of electrolysis.
Mr Ramu wants electrolyte his key chain with nickel to prevent rusting. For this electroplating
(i) Name the electrolyte
(ii) Name the cathode
(iii) Name the anode
(iv) Give the reaction at the cathode
(v) Give the reaction at the anode
Copy and complete the following table :
| Anode | Electrolyte | |
| Purification of copper |
Draw a labelled diagram to show how iron is electroplated with copper.
Write two applications of electrolysis in which the anode diminishes in mass.
What ions must be present in a solution used for electroplating a particular metal?
