Chemistry
Explain the following :
Zinc can produce hydrogen on reacting with acids but copper cannot. Explain.
Related Questions
Explain the following :
On electrolysis of dilute copper (II) sulphate solution, copper is deposited at the cathode but no hydrogen gas evolves there. Explain why.
Explain the following :
When a dilute aqueous solution of sodium chloride is electrolysed between platinum electrodes, hydrogen gas is evolved at the cathode but metallic sodium is not deposited. Why?
To carry out the so-called 'electrolysis of water', sulphuric acid is added to water. How does the addition of sulphuric acid produce a conducting solution?
AB2 is a hard crystalline solid having high melting and boiling points. It conducts electricity in aqueous and molten states.
(i) AB2 conducts electricity due to the presence of free …………… (ions/molecules/electrons).
(ii) During electrolysis of AB2 in aqueous state, it is observed that cathode becomes thick and anode thin. The anode material will be …………… (graphite/metal A).