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 pressure of CO2 attains its maximum value, will be: 

Given that : SrCO3(s)  SrO(s) + CO2(g) , kp = 1.6 atm 
1. 10 litre
2. 2 litre
3. 4 litre
4. 5 litre

Subtopic:  Kp, Kc & Factors Affecting them |
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Following solutions were prepared by mixing different volumes of NaOH and HCl of different concentrations :
A)  60 mL M10HCI  + 40 mL M10NaOH
B)   55 mL M10HCI  + 45 mL M10NaOH
C)  75 mL M5HCI  + 25 mL M5NaOH
D)  100 mL M10HCI  + 100 mL M10NaOH
pH of which one of them will be equal to 1?
1. B
2. A
3. D
4. C

Subtopic:  pH calculation |
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The solubility of BaSO4 in water is 2.42 × 10-3 g/ litre at 298 K. The value of the solubility product will be:

(Molar mass of BaSO4 = 233 gmol–1)

1.  1.08 × 10-10 mol2 L-2
2.  1.08 × 10-12 mol2 L-2
3.  1.08 × 10-14 mol2 L-2
4.  1.08 × 10-8 mol2 L-2

Subtopic:  Solubility Product |
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Which of the following conditions will favour maximum formation of the product in the reaction, 
 A2 (g)  + B2 (g)   X2 (g) rH = -X k J  ?

1. Low temperature and high pressure
2. Low temperature and low pressure
3. High temperature and high pressure
4. High temperature and low pressure

Subtopic:  Le Chatelier's principle |
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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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At room temperature, MY and NY3, two nearly insoluble salts, have the same Ksp values of 6.2 x 10-13 . The true statement regarding MY and NY3 is:

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 a 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:  Common Ion Effect |
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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 into the solution
4.  combines with proton from water molecules

Subtopic:  Acids & Bases - Definitions & Classification |
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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.  1.26×10-5 M
2.  1.6×10-9 M
3.  1.6×10-11 M
4.  zero

Subtopic:  Solubility Product |
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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:  Ionisation Constant of Acid, Base & Salt |
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