List of top Chemistry Questions on Ionic Equilibrium In Solution asked in JEE Main

K$_{sp}$ of AgBr = 4y Then, the ratio of molarity (solubility) of (1) to (2) is:

Find the concentration of $ \text{X}^{2-} $ at equilibrium in 0.1 M $ \text{H}_2\text{X} $. Given $ K_{a1} = 2.5 \times 10^{-7} $ and $ K_{a2} = 1 \times 10^{-13} $.

Molar conductivity of a weak acid HQ of concentration 0.18 M was found to be $ \dfrac{1}{30} $ of the molar conductivity of another weak acid HZ with concentration 0.02 M. If $ \alpha_Q $ happened to be equal to $ \alpha_Z $, then the difference of the pK_a values of the two weak acids (pK_a(HQ) − pK_a(HZ)) is ________ (Nearest integer).
(Given: degree of dissociation $ \alpha \ll 1 $ for both weak acids, $ \lambda^\circ $: limiting molar conductivity of ions)

The first and second ionization constants of $H_{2X}$ 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^{-13}$ M. (Nearest Integer)

Find the concentration of $ \mathrm{X^{2-}} $ at equilibrium in $0.1\,\mathrm{M}$ $ \mathrm{H_2X} $. Given: \[ K_{a1} = 2.5 \times 10^{-7}, \qquad K_{a2} = 1 \times 10^{-13} \]

There is a weak base 'B' having $\text{pK}_b = 5.691$ of molarity 0.02M. When 0.02M HCl solution has been added, then pH of resultant buffer solution has been found to be 9. Take total volume of resultant buffer solution to be 100 ml. Find the value of 'x' & 'y', where 'x' is volume of HCl solution in ml & 'y' is volume of 'B' solution in ml. Given $\log(5) = 0.691$

Calculate pH of 10 mM weak acid (HA) dissociated in water. Assume $\alpha$ to be negligible. Given $\text{pK}_a = 4$

0.18 M HQ solution has molar conductivity $\frac{1}{30}$ times the molar conductivity of 0.02 M HZ solution. Find the value of pK$_a$(HQ) − pK$_a$(HZ).
[Given that $\alpha$ is very less than 1]

Which of the following is a basic buffer?

Volume ratio of decimolar $ \mathrm{NH_4OH} $ and decimolar $ \mathrm{HCl} $ to give a solution of pH = 9.25 at $25^\circ\mathrm{C}$ is $x : 1$. Find $x$. (Given: $ \mathrm{p}K_b $ of $ \mathrm{NH_4OH} = 7.75 $)

Volume ratio of decimolar $ \mathrm{NH_4OH} $ and decimolar $ \mathrm{HCl} $ to give a solution of pH $= 9.25$ at $25^\circ\mathrm{C}$ is $x : 1$. Find $x$. (Given: $ \mathrm{p}K_b $ of $ \mathrm{NH_4OH} = 4.75$)

Which of the following is least iconic

Given below are two statements:
Statement I: On passing HCl$_{(g)}$ through a saturated solution of BaCl$_2$, at room temperature white turbidity appears.
Statement II: When HCl gas is passed through a saturated solution of NaCl, sodium chloride is precipitated due to common ion effect.
In the light of the above statements, choose the most appropriate answer from the options given below:

Which of the following has the highest 3rd ionization energy?

Solubility of calcium phosphate (molecular mass, $ M $) in water is $ W_g $ per 100 mL at $ 25^\circ C $. Its solubility product at $ 25^\circ C $ will be approximately:

$\text{The pH of an aqueous solution containing 1 M benzoic acid (} pK_a = 4.20 \text{) and 1 M sodium benzoate is 4.5.}$
$\text{The volume of benzoic acid solution in 300 mL of this buffer solution is \_\_\_\_\_\_ mL.}$

Which of the following elements has the highest 1st ionization energy ?

The spin only magnetic moment of complex ion $[Ni(NH_3)_6]^{2+}$+ is $X \times 10^{-1}$ $BM$. The value of $X$ is

$Ka _1, Ka _2$ and $Ka _3$ are the respective ionization constants for the following reactions (a), (b) and (c)
(a) $H _2 C _2 O _4 \rightleftharpoons H ^{+}+ HC _2 O _4^{-}$
(b) $HC _2 O _4^{-} \rightleftharpoons H ^{+}+ HC _2 O _4^{2-}$
(c) $H _2 C _2 O _4 \rightleftharpoons 2 H ^{+}+ C _2 O _4^{2-}$
The relationship between $K _{ a _1}, K _{ a _2}$ and $K _{ a _3}$ is given as

Which one of the following sets of ions represents a collection of isoelectronic species ?
(Given : Atomic Number : $F : 9, Cl : 17, Na =11, Mg =12, Al =13, K =19, Ca =20, Sc =21$)

25 mL of silver nitrate solution (1M) is added dropwise to 25 mL of potassium iodide (1.05 M) solution. The ions(s) present in very small quantity in the solution is/are:

The correct order of increasing ionic radii is

pH value of 0.001 M NaOH solution is _______.

Ionic radii of cation A⁺ and anion B^– are 102 and 181 pm, respectively. These ions are allowed to crystallize into an ionic solid. This crystal has cubic close packing for B^–. A⁺ is present in all octahedral voids. The edge length of the unit cell of the crystal AB is _____pm. (Nearest integer)

Ka₁, Ka₂ and Ka₃ are the respective ionization constants for the following reactions (a),(b), and (c).
(a) H₂C₂O₄⇌H⁺+HC₂O₄⁻
(b) HC₂O₄⁻⇌H⁺+HC₂O₄²⁻
(c) H₂C₂O₄⇌2H⁺+_C2O₄²⁻
The relationship between Ka₁,Ka₂ and Ka₃ is given as