COMEDK · Chemistry · 8. Ionic Equilibrium
At 30°C the solubility of PbI\(_2\) salt in 0.2 M KI solution will be X, if the solubility product of PbI\(_2\) at 30°C is \(2.4 \times 10^{-8}\). Identify the value of X.
- A \(6.0 \times 10^{-7}\)M
- B \(2.4 \times 10^{-8}\)M
- C \(3.0 \times 10^{-8}\)M
- D \(4.8 \times 10^{-7}\)M
Answer & Solution
Correct Answer
(A) \(6.0 \times 10^{-7}\)M
Step-by-step Solution
Detailed explanation
The dissociation of \(PbI_2\) is given by: \(PbI_2(s) \rightleftharpoons Pb^{2+}(aq) + 2I^-(aq)\) Let the solubility of \(PbI_2\) in \(0.2\) M \(KI\) solution be \(s\). The concentration of \(I^-\) ions from \(KI\) is \(0.2\) M. Since \(KI\) is a strong electrolyte, it…
See the Complete Solution
Get step-by-step explanations for this and 2.5 Lakh+ more JEE, NEET & CET questions.
- Unlock all solutions
- Practice the full chapter
- Track accuracy across PYQs
4.8 rated on Google Play · 14,000+ reviews
More questions from Chemistry
- One mole of oxygen at \(273 \mathrm{~K}\) and one mole of sulphur dioxide at \(546 \mathrm{~K}\) are taken in two separate containers, thenCOMEDK 2020 Medium
- What would be the cell potential for the Galvanic cell which is represented by the electrochemical reaction:
\(\begin{aligned}
& 2 \mathrm{Cr}_{(\mathrm{S})}+3 \mathrm{Fe}^{2+}(0.02 \mathrm{M}) \rightarrow 2 \mathrm{Cr}^{3+}(0.2 \mathrm{M})+3 \mathrm{Fe} \\
& \mathrm{E}^0 \mathrm{Fe}^{2+} / \mathrm{Fe}=-0.42 \mathrm{~V} \quad \mathrm{E}^0 \mathrm{Cr}^{3+} / \mathrm{Cr}=-0.72 \mathrm{~V}
\end{aligned}\)COMEDK 2025 Medium - The enolic form of butanone containsCOMEDK 2024 Medium
- The mole fraction of an unknown solute in 1560 g of Benzene is 0.5 . What is the molality of the solution? (M. M of Benzene:78 amu)COMEDK 2025 Medium
- An organic compound \([\mathrm{A}]\left(\mathrm{C}_5 \mathrm{H}_{12} \mathrm{O}\right)\), on reaction with conc. \(\mathrm{H}_2 \mathrm{SO}_4\) at \(443 \mathrm{~K}\) gives \([\mathrm{B}]\) as one of the products. Compound [B] undergoes further reaction with \(\mathrm{O}_3\) and \(\mathrm{Zn} / \mathrm{H}_2 \mathrm{O}\) to give Propanone and Ethanal as products. Identify compound [A]COMEDK 2024 Medium
- A given chemical reaction is represented by the following stoichiometric equation.
\(3 X+2 Y+\dfrac{5}{2} Z \rightarrow P_1+P_2+P_3\)
The rate of reaction can be expressed as _________.COMEDK 2024 Medium
More PYQs from COMEDK
- The magnitude and direction of the electric field in a particular region is \((10 \boldsymbol{i}+4 \boldsymbol{j}+2 \boldsymbol{k}) \times 10^4 \mathrm{NC}^{-1}\). What s the electric flux through an area \((3 \boldsymbol{i}-\boldsymbol{k}) 10^{-2} \mathrm{~m}^2\)COMEDK 2025 Medium
- The power of a gun which fires 120 bullet per minute with a velocity \(120 \mathrm{~ms}^{-1}\) is : (given the mass of each bullet is \(100 \mathrm{~g}\))COMEDK 2024 Medium
- The solution of \(\frac{6 x}{4 x-1} < \frac{1}{2}\) isCOMEDK 2015 Easy
- Choose the correct statement.COMEDK 2025 Medium
- A gas bubble of volume \(2 \mathrm{~cm}^3\) rises from the bottom of a pond of depth 10 m at \(17^0 \mathrm{C}\). What will be the volume of the bubble when it reaches the surface of the pond? Atmospheric temperature is \(27^{\circ} \mathrm{C}\) and the pressure at the bottom of the pond is double that of the pressure at the surface.COMEDK 2025 Medium
- Identify the final product formed when benzenamine reacts with the given reagents in the sequential order as:
i. (CH\(_3$$-\)CO )\(_2\)O / Pyridine.
ii. Conc. HNO\(_3\) + H\(_2\)SO\(_4\) & then reacted with H\(_3\)O\(^+\)
iii. NaNO\(_2\) HCl (273K) & then reacted with H\(_3\)PO\(_2\)(aq).COMEDK 2026 Hard