Ncert Exercises & Solutions

When $C u^{2 +}$ ion is treated with KI, a white precipitate is formed. Explain the reaction with the help of chemical equation.

NEETprep Answer: When

C u^{2 +}

ion is treated with KI it produces

C u_{2} I_{2}

white precipitate in the final product.

2 C u^{2 +} + 4 I^{-} \to C u_{2} I_{2} + I_{2}

(W h i t e p p t .)

In this reaction,

C u L_{2}

is formesd which being unstable, dissociates into

C u_{2} I_{2} a n d I_{2}

)