Ionic Equilibrium · Chemistry · TS EAMCET
MCQ (Single Correct Answer)
The volume of water required to dissolve $0.1 \mathrm{~g} \mathrm{PbCl}_2$ to get a saturated solution (in mL ) is (Given $K_{s p}\left(\mathrm{PbCl}_2\right)=3.2 \times 10^{-8}$; Atomic mass of $\mathrm{Pb}=207 \mathrm{u}$ )
At $T(\mathrm{~K})$ in a saturated solution of $\mathrm{MgCO}_3$ and $\mathrm{Ag}_2 \mathrm{CO}_3$, if the concentration of $\mathrm{Mg}^{2+}$ ion is $3.2 \times 10^{-5} \mathrm{M}$, then the concentration of $\mathrm{Ag}^{+}$ion in the solution will be [Given, $K_{\mathrm{sp}}\left(\mathrm{MgCO}_3\right)=1.6 \times 10^{-6}$ and $K_{\mathrm{sp}}\left(\mathrm{Ag}_2 \mathrm{CO}_3\right)=8.0 \times 10^{-12}$ at $T(\mathrm{~K})$ ]
200 mL of an aqueous solution of $\mathrm{HCl}(\mathrm{pH}=2)$ is mixed with 300 mL of aqueous solution of NaOH $(\mathrm{pH}=12)$ and is diluted to 1.0 L . The pH of the resulting solution is ( $\mathrm{pH}=2$ )
At 298 K the molar solubility of $\mathrm{Cd}(\mathrm{OH})_2$ in $0.1 \mathrm{M} \mathrm{KOH}_{\mathrm{OH}}$ solution is $x \times 10^{-y}$. The values of $x$ and $y$ are respectively.
(At $298 \mathrm{~K}, K_{s p}$ of $\mathrm{Cd}(\mathrm{OH})_2=2.5 \times 10^{-14}$ )
Which of the following does not form a buffer solution?
Assertion (A) $\mathrm{p} K_a$ of phenol is 4.19 and that of benzoic acid is 10 .
Reason (R) Phenoxide ion is stabilised by non-equivalent resonance structures whereas benzoate ion by two equivalent resonance structures.
The correct option among the following is
Ammonia is a Lewis base because it is
How many of the following are diprotic acids? Citric acid, chromic acid, oxalic acid, pyrosulphuric acid, sulphurous acid
$$ \text { Match the following } $$
| $$ \text { Metal sulphide } $$ |
$$ \text { Solubility product } $$ |
||
|---|---|---|---|
| (A) | $$ \mathrm{PbS} $$ |
(I) | $$ 4.0 \times 10^{-53} $$ |
| (B) | $$ \mathrm{HgS} $$ |
(II) | $$ 8.0 \times 10^{-28} $$ |
| (C) | $$ \mathrm{MnS} $$ |
(III) | $$ 1.6 \times 10^{-24} $$ |
| (D) | $$ \mathrm{ZnS} $$ |
(IV) | $$ 2.5 \times 10^{-13} $$ |
$$ \text { The correct match is } $$
$$ \text { Match the following. } $$
| List I | List II | ||
|---|---|---|---|
| A | Aqueous solution of $\mathrm{AlCl}_3$ | I | Basic |
| B | Aqueous solution $\mathrm{CH}_3 \mathrm{COONa}$ | II | Acidic |
| C | Aqueous solution of KCl | III | Highly conductive |
| D | $\mathrm{Al}_2 \mathrm{O}_3$ | IV | Strongly basic |
| V | Amphoteric | ||
$$ \text { The correct match is } $$
The pH of pure water at $80^{\circ} \mathrm{C}$ is
pH of 0.05 M aqueous solution of diethyl amine is 10 . The value of equilibrium constant is
The pH of the solution, when
(i) sodium acetate is dissolved in water.
(ii) ammonium chloride is dissolved in water.
What is the pH of 10 L of a buffer solution containing $0.01 \mathrm{M} \mathrm{NH}_4 \mathrm{Cl}$ and $0.1 \mathrm{M} \mathrm{NH}_4 \mathrm{OH}$ having $\mathrm{pK}_b$ of 5 ?
Calculate the molar solubility of calcium hydroxide $\mathrm{Ca}(\mathrm{OH})_2$ in 0.10 M NaOH solution. The ionic product of calcium hydroxide is $5.5 \times 10^{-6}$.
Match the given ionisation constant values with the corresponding acids.
$$ \begin{array}{lll} \hline \text { A. } & \mathrm{HI} & \text { (i) } 3.2 \times 10^9 \\ \hline \text { B. } & \mathrm{HF} & \text { (ii) } 3.5 \times 10^{-4} \\ \hline \text { C. } & \mathrm{HCl} & \text { (iii) } 1.3 \times 10^6 \\ \hline \text { D. } & \mathrm{HBr} & \text { (iv) } 1.0 \times 10^9 \\ \hline \end{array} $$
$$ \text { The correct match is } $$