Question

HCl when added to H2S solution: (a) suppresses the ionization of H2S (b) enhances ionization (c) solution becomes coloured (d) does not effect

Answer 1

Answer:

Explanation:

Option (D) is correct.

When H  

2

​  

S gas is passed through HCl containing aqueous solution of CuCl  

2

​  

, HgCl  

2

​  

, BiCl  

2

​  

, and CoCl  

2

​  

, it does not precipitate out CoS as it belongs to IV group radical.  

In the II group, the lower concentration of  S  

2−

 ions can be achieved by passing H  

2

​  

S gas by passing through the solution of the salts in presence of HCl. HCl suppressess the degree of ionisation of H  

2

​  

S by common ion effect

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