Which of the following reagents can be used for making the distinction between `AgCl` and `Agl` ?

Options

A. Sodium thiosulphate solution
B. Dilute ammonia solution
C. Potassium cyanide solution
D. Dilute `HNO_(3)`

Answer

B

Explanation

`(1)" "3AgCldarr+Na_(2)S_(2)O_(3)rarrNa_(3)[Ag(S_(2)O_(3))_(2)]("soluble complex")+NaCl`
`" "3AgIdarr+Na_(2)S_(2)O_(3)rarrNa_(2)[Ag(S_(2)O_(3))_(2)]("soluble complex")+NaI`
`(2)" "AgCl+2NH_(3)rarr[Ag(NH_(3))_(2)]Cl("soluble complex")`
`" "AgI` is not soluble in dilute ammonia solution.
`(3)" "` Both soluble in potassium cyanide, forming soluble complexed.
`(4)" "` Both insoluble in dilute `HNO_(3)`.