Which of the following happens when {\NH}_4 {\OH} is added gradually to the solution containing 1 {\M} {\A}^{2+} and 1 {\M} {\B}^{3+} ions? Given : {\K}_{\text{sp }} [ {\A}( {\OH})_2] =9 \times 10^{-10} and {\K}_{\text{sp }} [ {\B}( {\OH})_3] = 27 \times 10^{-18} at 298 K [23 Jan 2025 Shift 1]

Correct Answer is : B(OH)3 will precipitate before A(OH)2

{\B}( {\OH})_3 will precipitate before {\A}( {\OH})_2

{\A}( {\OH})_2 will precipitate before {\B}( {\OH})_3

{\A}( {\OH})_2 and {\B}( {\OH})_3 will precipitate together

Both {\A}( {\OH})_2 and {\B}( {\OH})_3 do not show precipitation with {\NH}_4 {\OH}

Ionic Equilibrium Part 2

Section: Chemistry

Question : 19 of 34

Marks: +1, -0

Which of the following happens when NH4‌OH is added gradually to the solution containing 1MA2+ and 1MB3+ ions?
Given : K‌sp ‌[A(OH)2]=9×10−10 and K‌sp ‌[B(OH)3]= 27×10−18 at 298 K

[23 Jan 2025 Shift 1]

B(OH)3 will precipitate before A(OH)2
A(OH)2 will precipitate before B(OH)3
A(OH)2 and B(OH)3 will precipitate together
Both A(OH)2 and B(OH)3 do not show precipitation with NH4‌OH

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