Electrochemistr...

Maintenance-free batteries, now in use, in place of common batteries, have :

Schematic diagram of an electrolytic-cell is:

Which of the following oxide(s) of iron would be obtained on prolonged reaction of iron with steam?

The process of depositing a thin layer of desired metal over another metal by passing an electric current through some electrolyte is called as ?

$$Al_2O_3$$ is reduced by electrolysis at low potentials and high currents. If $$4.0 \times 10^4$$ amperes of current is passed through molten $$Al_2O_3$$ for 6 hours, what mass of aluminium is produced? (Assume 100% current efficiency, at. mass of $$Al = 27 g \;mol^{-1})$$

$$E_{N{a^ + }/Na(s)}^0 =  - 2.71V$$ ,  $$E_{M{g^{2 + }}/Mg(s)}^0 =  - 2.37V$$,  $$E_{F{e^{2 + }}/Fe(s)}^0 =  - 0.44V$$  and $$E_{C{r^{3 + }}/Cr(s)}^0 =  - 0.41V$$Based on this data, state which of the following is the weakest reducing agent.

For the cell reaction : $$C{u^{2 + }}(aq)({C_1}) + Zn(s) \to Z{n^{2 + }}(aq)({C_2}) + Cu(s)$$ the change in free energy $$\Delta G$$ at a given temperature is a function of

Which is true according to the Faraday Law of electrolysis? Here $$m$$ is the mass deposited at an electrode, $$Q$$ is the charge at the electrode and $$I$$ is the current passed.

Corrosion of iron pipes occurs in the presence of water. To prevent such corrosion, iron pipes are normally coated with an element like magnesium using electroplating.
Which of the following statements is correct?

According to Faraday's law of electrolysis, the amount of decomposition is proportional to: