The percentage of pyridine (C5H5N) that forms pyridinium ion (C5H5N+H) in a 0.10 M aqueous pyridine solution (Kb for C5H5N = 1.7 x 10-9) is

(1) 0.0060 %                 

(2) 0.013 %

(3) 0.77 %                     

(4) 1.6%

Subtopic:  Kp, Kc & Factors Affecting them |
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The solubility of AgCl (s) with solubility product 1.6 x 10-10 in 0.1 M NaCl solution would be

(1) 1.26 x 10-5 M               

(2) 1.6 x 10-9 M

(3) 1.6 x 10-11 M               

(4) zero

Subtopic:  Solubility Product |
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Boric acid is an  acid because its molecule

(1) contains replaceable H+ ion

(2) gives up a proton

(3) accepts OH- from water releasing proton

(4) combines with proton from water molecule

Subtopic:  Acids & Bases - Definitions & Classification |
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Which of the following fluoro-compounds is most likely to behave as a Lewis base?
(1) BF3

(2) PF3

(3) CF4

(4) SiF4

Subtopic:  Acids & Bases - Definitions & Classification |
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Among the following, the correct order of acidity is

1. HClO < HClO2 < HClO3 < HClO4

2. HClO2 < HClO < HClO3 < HCLO4

3. HClO4 < HClO2 < HClO < HClO3

4. HClO3 < HClO4 < HClO2 < HClO

Subtopic:  Acids & Bases - Definitions & Classification |
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MY and NY3 , two nearly insoluble salts, have the same Ksp values of 6.2 x 10-13 at room

temperature. Which statement would be true in regard to MY and NY3?

1. The molar solubility of MY in water is less than that of NY3

2. The salts MY and NY3 are more soluble in 0.5 M KY than in pure water

3. The addition of the salt of KY to solution of MY and NY3 will have no effect on their

solubilities

4. The molar solubilities of MY and NY3 in water are identical

Subtopic:  Solubility Product |
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Consider the nitration of benzene using mixed conc. H2SO4 and HNO3. If a large amount

of KHSO4 is added to the mixture, the rate of nitration will be

1. slower 

2. unchanged

3. doubled

4. faster

Subtopic:  Le Chatelier's principle |
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Concentration of the Ag+ ions in a saturated solution of Ag2C2O4 is 2.2 x 10-4 mol-1 solubility product of Ag2C2O4 is

1. 2.42 x 10-8

2. 2.66 x 10-12

3. 4.5 x 10-11

4. 5.3 x 10-12

Subtopic:  Solubility Product |
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A 20 litre container at 400 K contains CO2(g) at pressure 0.4 atm and an excess of SrO (neglect the volume of solid SrO). The volume of the container is now decreased by moving the movable piston fitted in the container. The maximum volume of the container, when the pressure of CO2 attains its maximum value, when the pressure of C02 attains its maximum value, will be

(Given that: SrCO3(s)  SrO(s) + CO2(g), (Kp =1.6 atm))

(1) 5 L

(2) 10 L

(3) 4L

(4) 2L

Subtopic:  Kp, Kc & Factors Affecting them |
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Given are three reactions and their equilibrium constants : 
N2+3H2  2NH3      K1N2+O2  2NO         K2H2+12O2  H2O      K3

The equilibrium constant (K) of the following reaction will be : 
2NH3+52O2 K 2NO+3H2O
1. K2K33/K1
2. K2K3/K1
3. K23K3/K1
4. K1K33/K2

Subtopic:  Kp, Kc & Factors Affecting them |
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