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Previous year question hub

Ionic Equilibrium - Physical Chemistry - Chemistry Previous Year Questions

Practice Ionic Equilibrium - Physical Chemistry - Chemistry previous year questions organised from real papers, with year-wise coverage and clear topic navigation.

16Papers
11Years
19Questions
1Topics

Ionic Equilibrium question pattern

Every graph below is calculated only from this selection.

Questions by year

Year-wise coverage for Ionic Equilibrium. Each bar uses a separate theme-derived color.

Difficulty distribution

How the classified questions are distributed by difficulty.

Medium 14 73.7%
Hard 4 21.1%
Easy 1 5.3%

Question type distribution

MCQ, numerical, multiple-select and other formats found in these papers.

Numerical Answer Type (NAT) 10 52.6%
Multiple Choices 9 47.4%

Subject weightage

Top subjects by unique question coverage.

Chemistry
19 Qs

Most asked topics

Top topics across the included previous year papers.

Physical Chemistry
19 Qs

Subtopic coverage

Top subtopics inside this exact selection.

Ionic Equilibrium
19 Qs

Paper coverage

Question coverage for the most populated papers. Every active PYP paper remains listed below.

JEE ADVANCED 2025 PAPER 1 ONLINE
1 Qs
JEE ADVANCED 2025 PAPER 2 ONLINE
1 Qs
JEE ADVANCED 2023 PAPER 1 ONLINE
1 Qs
JEE ADVANCED 2022 PAPER 1 ONLINE
1 Qs
JEE ADVANCED 2022 PAPER 2 ONLINE
1 Qs
JEE ADVANCED 2020 PAPER 2 OFFLINE
2 Qs
JEE ADVANCED 2018 PAPER 1 OFFLINE
1 Qs
JEE ADVANCED 2018 PAPER 2 OFFLINE
1 Qs
JEE ADVANCED 2015 PAPER 2 OFFLINE
2 Qs
JEE ADVANCED 2013 PAPER 1 OFFLINE
1 Qs
JEE ADVANCED 2013 PAPER 2 OFFLINE
1 Qs
IIT JEE 2011 PAPER 2 OFFLINE
1 Qs
IIT JEE 2010 PAPER 1 OFFLINE
2 Qs
IIT JEE 2009 PAPER 2 OFFLINE
1 Qs
IIT JEE 2008 PAPER 1 OFFLINE
1 Qs
IIT JEE 2008 PAPER 2 OFFLINE
1 Qs

Included previous year papers

Newest papers appear first. Sort by year, question coverage or name.

PaperYear / sessionQuestions in this viewOpen
JEE ADVANCED 2025 PAPER 1 ONLINE20251View paper
JEE ADVANCED 2025 PAPER 2 ONLINE20251View paper
JEE ADVANCED 2023 PAPER 1 ONLINE20231View paper
JEE ADVANCED 2022 PAPER 1 ONLINE20221View paper
JEE ADVANCED 2022 PAPER 2 ONLINE20221View paper
JEE ADVANCED 2020 PAPER 2 OFFLINE20202View paper
JEE ADVANCED 2018 PAPER 1 OFFLINE20181View paper
JEE ADVANCED 2018 PAPER 2 OFFLINE20181View paper
JEE ADVANCED 2015 PAPER 2 OFFLINE20152View paper
JEE ADVANCED 2013 PAPER 1 OFFLINE20131View paper
JEE ADVANCED 2013 PAPER 2 OFFLINE20131View paper
IIT JEE 2011 PAPER 2 OFFLINE20111View paper
IIT JEE 2010 PAPER 1 OFFLINE20102View paper
IIT JEE 2009 PAPER 2 OFFLINE20091View paper
IIT JEE 2008 PAPER 1 OFFLINE20081View paper
IIT JEE 2008 PAPER 2 OFFLINE20081View paper

All Ionic Equilibrium previous year questions

Practice every matching question in batches of 20, with every available option.

1
2008 · Chemistry · Physical Chemistry · Ionic Equilibrium
IIT JEE 2008 PAPER 1 OFFLINE

2.5 mL of \(\frac{2}{5}\)M weak monoacidic base (K\(_b\) = 1 \(\times\) 10\(^{-12}\) at 25\(^\circ\)C) is titrated with \(\frac{2}{15}\)M HCl in water at 25\(^\circ\)C. The concentration of H\(^+\) at equivalence point is (K\(_w\) = 1 \(\times\) 10\(^{-14}\) at 25\(^\circ\)C).

A
3.7 \(\times\) 10\(^{-13}\) M
B
3.2 \(\times\) 10\(^{-7}\) M
C
3.2 \(\times\) 10\(^{-2}\) M
D
2.7 \(\times\) 10\(^{-2}\) M
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2
2008 · Chemistry · Physical Chemistry · Ionic Equilibrium
IIT JEE 2008 PAPER 2 OFFLINE

Solubility product constants (K\(_{sp}\)) of salts of types MX, MX\(_2\) and M\(_3\)X at temperature T are 4.0 \(\times\) 10\(^{-8}\), 3.2 \(\times\) 10\(^{-14}\) and 2.7 \(\times\) 10\(^{-15}\), respectively. Solubilities (mol dm\(^{-3}\)) of the salts at temperature 'T' are in the order:

A
MX > MX\(_2\) > M\(_3\)X
B
M\(_3\)X > MX\(_2\) > MX
C
MX\(_2\) > M\(_3\)X > MX
D
MX > M\(_3\)X > MX\(_2\)
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3
2009 · Chemistry · Physical Chemistry · Ionic Equilibrium
IIT JEE 2009 PAPER 2 OFFLINE

The dissociation constant of a substituted benzoic acid at 25\(^\circ\)C is 1.0 \(\times\) 10\(^{-4}\). The pH of a 0.01 M solution of its sodium salt is __________.

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4
2010 · Chemistry · Physical Chemistry · Ionic Equilibrium
IIT JEE 2010 PAPER 1 OFFLINE
Amongst the following the total number of compounds whose aqueous solution turns red litmus paper blue is
KCN, K2SO4, (NH4)2C2O4, NaCl, Zn(NO3)2, FeCl3, K2CO3, NH4NO3 and LiCN
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5
2010 · Chemistry · Physical Chemistry · Ionic Equilibrium
IIT JEE 2010 PAPER 1 OFFLINE
Aqueous solution of HNO3, KOH and CH3COOH and CH3COONa of identical concentrations are provided. The pairs of solutions which form a buffer upon mixing is(are)
A
HNO3 and CH3COOH
B
KOH and CH3COONa
C
HNO3 and CH3COONa
D
CH3COOH and CH3COONa
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6
2011 · Chemistry · Physical Chemistry · Ionic Equilibrium
IIT JEE 2011 PAPER 2 OFFLINE
In 1 L saturated solution of AgCl [Ksp(AgCl) = 1.6 \(\times\) 10-10], 0.1 mol of CuCl [Ksp(CuCl) = 1.0 \(\times\) 10-6] is added. The resultant concentration of Ag+ in the solution is 1.6 \(\times\) 10-x. The value of "x" is
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7
2013 · Chemistry · Physical Chemistry · Ionic Equilibrium
JEE ADVANCED 2013 PAPER 1 OFFLINE
The initial rate of hydrolysis of methyl acetate (1M) by a weak acid (HA, 1M) is 1/100th of that of a strong acid (HX, 1M), at 25oC. The Ka of HA is
A
1 \(\times\) 10-4
B
1 \(\times\) 10-5
C
1 \(\times\) 10-6
D
1 \(\times\) 10-3
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8
2013 · Chemistry · Physical Chemistry · Ionic Equilibrium
JEE ADVANCED 2013 PAPER 2 OFFLINE
The Ksp of Ag2CrO4 is 1.1 \(\times\) 10-12 at 298 K. The solubility (in mol/L) of Ag2CrO4 in a 0.1 M AgNO3 solution is
A
1.1 \(\times\) 10-11
B
1.1 \(\times\) 10-10
C
1.1 \(\times\) 10-12
D
1.1 \(\times\) 10-9
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9
2015 · Chemistry · Physical Chemistry · Ionic Equilibrium
JEE ADVANCED 2015 PAPER 2 OFFLINE
Paragraph
When 100 mL of 1.0 M HCl was mixed with 100 mL of 1.0 M NaOH in an insulated beaker at constant pressure, a temperature increase of 5.7o C was measured for the beaker and its contents (Expt. 1). Because the enthalpy of neutralization of a strong acid with a strong base is constant (-57.0 kJ/mol), this experiment could be used to measure the calorimeter constant. In a second experiment (Expt. 2) 100 mL of 2.0 M acetic acid (Ka = 2.0 \(\times\) 10-5) was mixed with 100 mL of 1.0 M NaOH (under identical conditions to Expt. 1) where a temperature rise of 5.6o C was measured. (Consider heat capacity of all solutions as 4.2 J/gK and density of all solutions as 1.0 g m/L)
Question
Enthalpy of dissociation (in kJ/mol) of acetic acid obtained from the Expt. 2 is
A
1.0
B
10.0
C
24.5
D
51.4
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10
2015 · Chemistry · Physical Chemistry · Ionic Equilibrium
JEE ADVANCED 2015 PAPER 2 OFFLINE
Paragraph
When 100 mL of 1.0 M KCl was mixed with 100 mL of 1.0 M NaOH in an insulated beaker at constant pressure, a temperature increase of 5.7o C was measured for the beaker and its contents (Expt. 1). Because the enthalpy of neutralization of a strong acid with a strong base is constant (-57.0 kJ/mol), this experiment could be used to measure the calorimeter constant. In a second experiment (Expt. 2) 100 mL of 2.0 M acetic acid (Ka = 2.0 \(\times\) 10-5) was mixed with 100 mL of 1.0 M NaOH (under identical conditions to Expt. 1) where a temperature rise of 5.6o C was measured. (Consider heat capacity of all solutions as 4.2 J/gK and density of all solutions as 1.0 g m/L)
Question
The pH of the solution after Expt. 2 is
A
2.8
B
4.7
C
5.0
D
7.0
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11
2018 · Chemistry · Physical Chemistry · Ionic Equilibrium
JEE ADVANCED 2018 PAPER 1 OFFLINE
The solubility of a salt of weak acid \((AB)\) at \(pH\,\) \(3\) is \(Y \times {10^{ - 3}}\) \(mol\,{L^{ - 1}}.\) The value of \(Y\) is ________________.

(Given that the value of solubility product of \(AB\) \(\left( {{K_{sp}}} \right) = 2 \times {10^{ - 10}}\) and the value of ionization constant of \(HB\) \(\left( {{K_a}} \right) = 1 \times {10^{ - 8}}\))
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12
2018 · Chemistry · Physical Chemistry · Ionic Equilibrium
JEE ADVANCED 2018 PAPER 2 OFFLINE
Dilution processes of different aqueous solutions, with water, are given in LIST - I. The effects of dilution of the solutions on \(\left[ {{H^ + }} \right]\) are given in LIST - II

(Note: Degree of dissociation (a) of weak acid and weak base is \(<<1;\) degree of hydrolysis of salt \(<<1;\) \(\left[ {{H^ + }} \right]\) represents the concentration of \({H^ + }\) ions)

LIST-I LIST-II
P. (10 mL of 0.1 M NaOH + 20 mL of
0.1 M acetic acid) diluted to 60 mL
1. the value of [H+] does not change
on dilution
Q. (20 mL of 0.1 M NaOH + 20 mL of
0.1 M acetic acid) diluted to 80 mL
2. the value of [H+] changes to half
of its initial value on dilution
R. (20 mL of 0.1 M HCL + 20 mL of
0.1 M ammonia solution) diluted to
80 mL
3. the value of [H+] changes to two
times of its initial value on dilution
S. 10 mL saturated solution of Ni(OH)2
in equilibrium with excess solid
Ni(OH)2 is diluted to 20 mL (solid
Ni(OH)2 is still present after dilution).
4. the value of [H+] changes to \({1 \over {\sqrt 2 }}\)
times of its initial value on dilution
5. the value of [H+] changes to \(\sqrt 2\)
times of its initial value on dilution


Match each process given in LIST-I with one or more effect(s) in LIST-II. The correct option is :
A
\(P - 4;Q - 2;R - 3;S - 1\)
B
\(P - 4;Q - 3;R - 2;S - 3\)
C
\(P - 1;Q - 4;R - 5;S - 3\)
D
\(P - 1;Q - 5;R - 4;S - 1\)
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13
2020 · Chemistry · Physical Chemistry · Ionic Equilibrium
JEE ADVANCED 2020 PAPER 2 OFFLINE
An acidified solution of 0.05 M Zn2+ is saturated with 0.1 M H2S. What is the minimum molar concentration (M) of H+ required to prevent the precipitation of ZnS?

Use Ksp(ZnS) = 1.25 \(\times\) 10\(-\)22 and overall dissociation constant of

H2S, Knet = K1K2 = 1 \(\times\) 10-21.
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14
2020 · Chemistry · Physical Chemistry · Ionic Equilibrium
JEE ADVANCED 2020 PAPER 2 OFFLINE
A solution of 0.1 M weak base (B) is titrated with 0.1 M of a strong acid (HA). The variation of pH of the solution with the volume of HA added is shown in the figure below. What is the pKb of the base? The neutralisation reaction is given by

$$B + HA\buildrel {} \over \longrightarrow B{H^ + } + {A^ - }$$

JEE Advanced 2020 Paper 2 Offline Chemistry - Ionic Equilibrium Question 9 English
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15
2022 · Chemistry · Physical Chemistry · Ionic Equilibrium
JEE ADVANCED 2022 PAPER 1 ONLINE

A solution is prepared by mixing $0.01 \mathrm{~mol}$ each of $\mathrm{H}_{2} \mathrm{CO}_{3}, \mathrm{NaHCO}_{3}, \mathrm{Na}_{2} \mathrm{CO}_{3}$, and $\mathrm{NaOH}$ in $100 \mathrm{~mL}$ of water. $p \mathrm{H}$ of the resulting solution is _________.

[Given: $p \mathrm{~K}_{\mathrm{a} 1}$ and $p \mathrm{~K}_{\mathrm{a} 2}$ of $\mathrm{H}_{2} \mathrm{CO}_{3}$ are $6.37$ and 10.32, respectively; $\log 2=0.30$ ]

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16
2022 · Chemistry · Physical Chemistry · Ionic Equilibrium
JEE ADVANCED 2022 PAPER 2 ONLINE

Concentration of $\mathrm{H}_{2} \mathrm{SO}_{4}$ and $\mathrm{Na}_{2} \mathrm{SO}_{4}$ in a solution is $1 \mathrm{M}$ and $1.8 \times 10^{-2} \mathrm{M}$, respectively. Molar solubility of $\mathrm{PbSO}_{4}$ in the same solution is $\mathrm{X} \times 10^{-\mathrm{Y}} \mathrm{M}$ (expressed in scientific notation). The value of $Y$ is ________.

[Given: Solubility product of $\mathrm{PbSO}_{4}\left(K_{s p}\right)=1.6 \times 10^{-8}$. For $\mathrm{H}_{2} \mathrm{SO}_{4}, K_{a l}$ is very large and $\left.K_{a 2}=1.2 \times 10^{-2}\right]$

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17
2023 · Chemistry · Physical Chemistry · Ionic Equilibrium
JEE ADVANCED 2023 PAPER 1 ONLINE
On decreasing the $p \mathrm{H}$ from 7 to 2 , the solubility of a sparingly soluble salt (MX) of a weak acid (HX) increased from $10^{-4} \mathrm{~mol} \mathrm{~L}^{-1}$ to $10^{-3} \mathrm{~mol} \mathrm{~L}^{-1}$. The $p \mathrm{~K}_{\mathrm{a}}$ of $\mathrm{HX}$ is
A
3
B
4
C
5
D
2
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18
2025 · Chemistry · Physical Chemistry · Ionic Equilibrium
JEE ADVANCED 2025 PAPER 1 ONLINE

At 25 °C, the concentration of H+ ions in 1.00 × 10−3 M aqueous solution of a weak monobasic acid having acid dissociation constant (Ka) of 4.00 × 10−11 is X × 10−7 M. The value of X is ______.

Use: Ionic product of water (Kw) = 1.00 × 10−14 at 25 °C

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19
2025 · Chemistry · Physical Chemistry · Ionic Equilibrium
JEE ADVANCED 2025 PAPER 2 ONLINE

The solubility of barium iodate in an aqueous solution prepared by mixing 200 mL of 0.010 M barium nitrate with 100 mL of 0.10 M sodium iodate is $\boldsymbol{X} \times 10^{-6} \mathrm{~mol} \mathrm{dm}^{-3}$. The value of $\boldsymbol{X}$ is ____________.

Use: Solubility product constant $\left(K_{\mathrm{sp}}\right)$ of barium iodate $=1.58 \times 10^{-9}$

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