Chemistry
Here is an electrode reaction:
Cu ⟶ Cu2+ + 2e-. [i.e. Cu – 2e- ⟶ Cu2+]
At which electrode (anode or cathode) would such a reaction take place ? Is this an example of oxidation or reduction ?
Related Questions
During the electrolysis of molten lead bromide, which of the following takes place ?
- Bromine is released at the cathode
- Lead is deposited at the anode
- Bromine ions gain electrons
- Lead is deposited at the cathode
A soln. contains Mg2+ ions, Fe2+ ions and Cu2+ ions. On passing an electric current through this soln. which ions will be the first to be discharged at the cathode? Write the equation for the cathode reaction.
Select the correct answer — The aqueous solution of the compound which contains both ions and molecules is:
- Sulphuric acid
- Hydrochloric acid
- Nitric acid
- Acetic acid
(A) Sulphur
(B) Silver chloride
(C) Hydrogen chloride
(D) Copper [II] sulphate
(E) Graphite
State which from A to E fits the description — 'A pink metal is deposited at the cathode during the electrolysis of the soln. of this salt.