Product of Electrolysis

Give the balanced chemical equation for the electrical decomposition of water.

During electrolysis of aqueous copper sulphate solution using platinum electrodes, the blue colour of the electrolytic solution fades and towards the end of the process bubbles appear at the cathode. Why ? 

Electrolysis of aqueous ${\mathrm{CuSO}}_4$ using inert electrodes gives?

Explain the electrolysis of aqueous copper sulphate.

$\mathrm{Cu}$ at cathode and ${\mathrm{O}}_2$ at anode are produced by electrolysis of aqueous ${\mathrm{CuSO}}_4$​ with inert electrodes.

During the electrolysis of copper sulphate solution, the mass of anode gradually:

What is the difference between complete and partial ionization?

$\mathrm{Z}\mathrm{n}$ gives hydrogen with ${\mathrm{H}}_2\mathrm{S}{\mathrm{O}}_4$ and $\mathrm{H}\mathrm{C}\mathrm{l}$ but not with $\mathrm{H}\mathrm{N}{\mathrm{O}}_3$ because