1.

Assertion : A solution of AgCI in NH_(4)OH gives a whiteprrecipitate when acidified with NHO_(3) Reasion : [Ag(NH_(3))_(2)]^(o+) decompoes in thepresence of HNO_(3)

Answer»

If both (A) and (B) are correct and (R ) is the correct explqanation of (A)
If both (A) and (B) are correct but (R ) is not the correct explqanation of (A)
If (A) is correct ,but (R ) is INCORRECT
If (A) is incorrect ,but (R ) is correct

Solution :AgCI dissolves in `NH_(4)OH` to from `[Ag(NH_(3))_(2)]^(Theta)` and `CI^(Theta)` ions whenacidefiedwith `HNO_(2),[Ag(NH_(3))_(2)]^(Theta)` ions GET decomposed to give `Ag^(Theta)`ions which REACTSWITH `CI^(Theta)` to from a whiteprecipitate of `AgCI`
` AgCI + 2NH_(4)OH rarr [Ag(NH_(3))_(2)]^(Theta) + 2H_(2)O + CI^(Theta)`
` [Ag(NH_(3))_(2)]^(Theta) + 2H^(Theta) rarr Ag^(Theta) + 2NH_(4)^(Theta)`
`Ag^(Theta) + CI^(Theta) rarr AgCI darr `
THus (A) and (R ) are TRUE and (R ) is the correct EXPLANATION for (A)


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