State giving reason , in what state or medium does
i) NaCl
ii)HCl gas
iii) NH3 gas conduct electricity
NaCl conduct electricity in aqueous solution.
HCl also conduct electricity in its aqueous solution.
C)There should be free flow of ions to conduct electricity. As there are no ions in ammonia gas, it will not conduct electricity.
Ammonia in water is an example for weak electrolyte. It exists as molecule in water and to some extent gets dissociated as ion. Since the weak electrolytes have fewer ions in the solution, it acts as weak conductor of electricity. The reactants (molecular form) and the products (ionic form) will be in equilibrium. Hence enough free ions are lacking to conduct electricity.
NH3 (aq.) + H2O ↔ NH4+ (aq.) + OH- (aq.)
This equation works out in both the directions. The cation and anion that are formed to conduct electricity will not stay back as such. They get immediately converted into ammonia and water. This is the reason for ammonia to act as weak electrolyte and does not conduct electricity.
