Which is the correct increasing order of the solubility of silver chloride in 0.1 M solution of the above compounds.

(a) Sodium chloride

(b)sodium nitrate

(c)silver chromate


Options

(1)a

(2)b

(3)c

(4)a

 

Asked by jhajuhi19 | 12th Jun, 2019, 07:23: PM

Expert Answer:

Solubility is reduced due to common ion effect.
When AgCl is dissolved it releases Ag+ and Cl- ions
 
(a) NaCl -NaCl will release Na and Cl- .
 
N a C l left right double arrow N a to the power of plus plus C l to the power of minus
So due to increase in concentration of common ion ( Cl-) rection will move in backward direction and solubility decreased.
 
(b)
N a N O subscript 3 left right double arrow N a to the power of plus plus N O subscript 3 to the power of minus
There is no common ion effect so solubility of AgCl will not decreased.
 
(c)
 A g subscript 2 C r O subscript 4 left right double arrow 2 A g to the power of plus plus thin space C r O subscript 4 to the power of minus
Here common ion effect is due to Ag+ ions. So solubility is decreased. 
This decrease in solubility will be more as compared to NaCl because in NaCl, 1 Cl- ion is available for one AgCl molecule, In Ag2CrO4, 2 Ag+ ions  are available for one AgCl molecule. So common ion effect in Ag2CrO4 is more effective.
 
Order of solubility -
 
b>a>c

Answered by Ravi | 24th Jun, 2019, 03:23: PM