Chemistry
Identify: A gas which does not conduct electricity in the liquid state but conducts electricity when dissolved in water.
Answer
Hydrogen chloride gas
Reason — Hydrogen chloride is a covalent gas and does not conduct electricity in its pure liquid state because it has no free ions. However, when dissolved in water, it forms hydrochloric acid (H3O+ and Cl- ions), which conducts electricity very well due to the presence of free ions.
Related Questions
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 ?
Aqueous solution of nickel sulphate contains Ni2+ and SO42- ions
(i) Which ion moves towards the cathode?
(ii) What is the product at the anode?
Give one word or phrase for: Electrolytic deposition of a superior metal on a base metal.
Give reason for the following:
The blue colour of aqueous copper sulphate fades when it is electrolyzed using platinum electrodes.