Equilibrium 2- Live Session - NEET 2020Contact Number: 9667591930 / 8527521718Equilibrium 2- Live Session - NEET 2020Contact Number: 9667591930 / 8527521718The solubility product of AgI at 25°C is 1.0 × 10–16 mol2L–2. The solubility if AgI in 10–4 N solution of KI at 25°C is approximately :
(in mol L–1)
1. 1.0 × 10–8
2. 1.0 × 10–16
3. 1.0 × 10–12
4. 1.0 × 10–10
The pH of 0.1 M solution of the following salts
increases in the order
1. NaCl < NH4Cl < NaCN < HCl
2. HCl < NH4Cl < NaCl < NaCN
3. NaCN < NH4Cl < NaCl < HCl
4. HCl < NaCl < NaCN < NH4Cl
The degree of hydrolysis in hydrolytic equilibrum
at salt concentration of
0.001 M is (Ka = 1 × 10–5)
1. 1 × 10–3
2. 1 × 10–4
3. 5 × 10–4
4. 1 × 10–6
Henderson’s equation is a
If the acid gets half neutralized the value of pH
will be : (pKa = 4.30)
1. 4.3
2. 2.15
3. 8.60
4. 7
The pH of a 0.01 M solution of acetic acid having
degree of dissociation 12.5% is
1. 5.623
2. 2.903
3. 3.723
4. 4.509
Which of the following solutions will have close
to 1.0
1. 100 ml of HCl + 100 ml of NaOH
2. 55 ml of HCl + 45 ml of NaOH
3. 10 ml of HCl + 90 ml of NaOH
4. 75 ml of HCl + 25 ml of NaOH
In which of the following solvents will AgBr have
the highest solubility
1. 10–3 M NaBr
2. 10–3 M NH4OH
3. Pure water
4. 10–3 M HBr
The solubility product of CuS, Ag2S, HgS are
10–31, 10–44, 10–54 respectively. The solubilities
of these sulphides are in the order
1. Ag2S > CuS > HgS
2. Ag2S > HgS > CuS
3. HgS > Ag2S > CuS
4. CuS > Ag2S > HgS
The solubility product constant Ksp of Mg(OH)2
is 9.0 × 10–12. If a solution is 0.010 M with respect
to Mg2+ ion, what is the maximum hydroxide ion
concentration which could be present without
causing the precipitation of Mg(OH)2
1. 1.5 × 10–7 M
2. 3.0 × 10–7 M
3. 1.5 × 10–5 M
4. 3.0 × 10–5 M
How many grams of CaC2O4 (molecular
weight = 128) on dissolving in distilled water will
give a saturated solution
[Ksp(CaC2O4) = 2.5×10–9 mol2l–2]
1. 0.0064 g
2. 0.1280 g
3. 0.0128 g
4. 1.2800 g
According to Bronsted-Lowry concept, the
correct order of relative strength of bases follows
the order
1. CH3COO– > Cl–> OH–
2. CH3COO– > OH–> Cl–
3. OH– > CH3COO–> Cl–
4. OH– > Cl–> CH3COO–
Which may be added to one litre of water to act
as a buffer
1. One mole of HC2H3O2 and 0.5 mole of NaOH
2. One mole of NH4Cl and one mole of HCl
3. One mole of NH4OH and one mole of NaOH
4. One mole of HC2H3O2 and one mole of HCl
A solution of weak acid HA containing 0.01 moles
of acid per litre of solutions has pH = 4. The
percentage degree of ionisation of the acid and
the ionisation constant of acid are respectively
1. 1%, 10–6
2. 0.01%, 10–4
3. 1%, 10–4
4. 0.01%, 10–6
40 mg of pure sodium hydroxide is dissolved in
10 litres of distilled water. The pH of the
solution is
1. 9.0
2. 10
3. 11
4. 12
A monoprotic acid in a 0.1 M solution ionizes to
0.001%. Its ionisation constant is
1. 1.0 × 10–3
2. 1.0 × 10–6
3. 1.0 × 10–8
4. 1.0 × 10–11