Ostwald dilution law for weak electrolyte HA can be given as

(1) Ka=2(1-α)
(2) Ka = 2 if α0
(3) Ka = 2λ2(λ2-λ)
(4) All of the above

Subtopic:  Ionisation Constant of Acid, Base & Salt |
 73%
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints

In the reaction, N2O4  2NO2α is that part of N2O4 which dissociates. The number of moles at equilibrium will be:

1. 1-α2

2. 3α

3. α

4. 1+α

Subtopic:  Introduction To Equilibrium |
 77%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

In which solution, AgCl has minimum solubility ?

1. 0.05 M AgNO3

2. 0.01 M NaCl

3. Pure Water

4. 0.01 M NH4OH

Subtopic:  Solubility Product |
 53%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

50 ml of HCl (pH=1) is mixed with another 100 ml of HCl (pH=2) then pH of resulting solution will be approximately

1. 1.2

2. 1.4

3. 1.6

4. 1.8

Subtopic:  pH calculation |
 73%
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints

In a nitrating mixture (HNO3 + H2SO4), HNO3 acts as

1. Acid

2. Base

3. Acid as well as Base

4. Neither acid nor base

Subtopic:  Acids & Bases - Definitions & Classification |
 65%
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints

When a solution of acetic acid was titrated with NaOH, the pH of the solution when half of the acid, neutralised was 4.2. Dissociation constant of the acid is

1. 6.31 × 10-5

2. 3.2 × 10-5

3. 8.7 × 10-8

4. 6.42 × 10-4

Subtopic:  pH calculation |
 52%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

The strongest Lewis acid among the following is:

1. BBr3

2. BCl3

3. BF3

4. All are same

Subtopic:  Acids & Bases - Definitions & Classification |
 51%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

Calculate the molar solublity of Fe(OH)2 at a pH of 8

[Ksp of Fe(OH)2 = 1.6 X 10-14]

1. 0.06

2. 0.016

3. 0.01

4. 0.16

Subtopic:  Kp, Kc & Factors Affecting them |
 73%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

To a 200 ml of 0.1 M weak acid HA solution 90 ml of 0.1 M solution of NaOH be added, Now, what volume of 0.1 M NaOH be added into above solution so that pH of resulting solution be 5.

[Ka(HA) = 10-5]

1. 2 ml               

2. 20 ml

3. 10 ml             

4. 15 ml

Subtopic:  pH calculation |
 57%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

If carbon dioxide is 2% dissociated at equilibrium 2CO2 (g)2CO(g) + O2(g). The mole fraction of CO2 at equuilibrium is

1. 1.01/0.98           

2. 0.98/1.01

3. 0.01/0.98           

4. 0.098/1.01

Subtopic:  Kp, Kc & Factors Affecting them |
 81%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh