Ionic Equilibrium | JEE Main Chemistry Chapter Wise Question Papers

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Topic Question Set

Q 1 :

Consider two Group IV metal ions $X^{2 +}$ and $Y^{2 +}$ .

A solution containing $0.01 M X^{2 +}$ and $0.01 M Y^{2 +}$ is saturated with $H_{2} S$ . The pH at which the metal sulphide YS will form as a precipitate is ________. (Nearest integer)

(Given: $K_{s p} (X S) = 1 \times 10^{- 22}$ at $25 ° C,$ $K_{s p} (Y S) = 4 \times 10^{- 16}$ at $25 ° C,$

$[H_{2} S] = 0.1 M in solution, K_{a 1} \times K_{a 2} (H_{2} S) = 1.0 \times 10^{- 21},$ $\log 2 = 0.30, \log 3 = 0.48, \log 5 = 0.70$ ) [2026]

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Q 2 :

The first and second ionization constants of $H_{2} X$ are $2.5 \times 10^{- 8}$ and $1.0 \times 10^{- 13}$ respectively. The concentration of $X^{2 -}$ in $0.1 M H_{2} X$ solution is______ $\times 10^{- 15} M$ . (Nearest Integer) [2026]

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