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
Choose the correct answer from the options given below:
The electrolyte used for electroplating an article with silver is
A. Silver nitrate solution
B. Silver cyanide solution
C. Sodium argentocyanide solution
D. Nickel sulfate solution
Out of Cu and Ag, which is more active?
Give reason for the following:
For electroplating with silver, silver nitrate is not used as an electrolyte.
Give three applications of electrolysis.
How is impure copper purified by electrolysis ? Explain.
Element X is a metal with valency 2. Element Y is a non-metal with valency 3.
(a) Write equations to show how X and Y form ions.
(b) If Y is diatomic gas, write the equation for the direct combination of X and Y to form a compound.
(c) Write two applications of electrolysis in which anode diminish in mass.
(d) If the compound formed between X and Y is melted and an electric current passed through the molten compound, the element X will be obtained at the _____ and the Y at the ________of the electrolytic cell. (Provide the missing words).
The electrolyte used for electroplating an article with silver is ______.
Copy and complete the following table :
| Anode | Electrolyte | |
| Purification of copper |
Which solution is preferred as electrolyte, CuSO4 or FeSO4?
Write two applications of electrolysis in which the anode diminishes in mass.
