When silver nitrate solution is added in solution containing nitrate, chloride and iodide ion, which salt will be precipitated first?

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Answer 1 · 2017-02-17T18:05:39

AgI(silver iodide)

Write the equation

$A g N O_{3} + N O_{3}^{- 1} + C l_{2}^{- 1} + I_{2}^{- 1}$ $AgNO_3+ NO_3^-1 + Cl_2^-1 + I_2^-1$

Our question is little bit wrong AgNO3 will not react with NO3 ions
But still to practice take Bromine ions

$A g^{- +} I^{+} = A g I$ $Ag^- + I^+ = AgI$

$A g^{+} + C l_{2}^{- =} A g C I$ $Ag^+ + Cl_2^- = AgCI$

$A g^{+} + B r^{- =} A g B r$ $Ag^+ + Br^- = AgBr$

Ksp of AgI = $8.3 xx 10^(–17)$
Ksp of AgCl = $1.77 xx 10^(¯10)$
Ksp of AgBr = $5.4 xx 10^ (−13$

As Ksp of AgI is the least so the AgI will precipitate first.