When a lead storage battery is charged,it acts as:

What is a galvanic cell? Give the half-cell reactions of a Daniell cell and explain a redox couple.

Which metal oxide decomposes upon heating?

The Gibbs energy for the decomposition of $Al_2O_3$ at $500^oC$ is as follows:
$\frac{2}{3} Al_2O_3 \rightarrow \frac{4}{3} Al + O_2$
$\Delta_rG = +960 \ kJ \ mol^{-1}$
The potential difference needed for the electrolytic reduction of aluminium oxide $(Al_2O_3)$ at $500^oC$ is at least ........ $V$.

$A$ concentrated solution of lead nitrate in water can be stored in

What is the function of a salt bridge?