KpKc for the gaseous reaction:

I. 2A + 3B 2CII. 2A4BIII. A+B+2C 4D

Would be respectively:

(1) (RT)-3, (RT)2, (RT)0 

(2) (RT)-3, (RT)-2, (RT)-1 

(3) (RT)-3, (RT)2, (RT) 

(4) None of the above

Subtopic:  Kp, Kc & Factors Affecting them |
 89%
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How many grams of CaC2O4 (molecular weight =128) on dissolving in distilled water will give a saturated solution

[Ksp (CaC2O4) = 2.5x10-9 mol2l-2

1. 0.0064 g             2. 0.1280 g

3. 0.0128 g             4. 1.2800 g

Subtopic:  Solubility Product |
 73%
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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 |
 76%
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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%
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Which of the following is least likely to behave as Lewis base?
(1) NH3

(2) BF3

(3) OH-

(4) H2O

Subtopic:  Ionisation Constant of Acid, Base & Salt | Acids & Bases - Definitions & Classification |
 85%
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In which of the following equilibrium Kc and Kp are not equal?

(1) 2NO(g) N2(g) + O2(g)

(2) SO2(g) + NO2(g) SO3(g) + NO(g)

(3) H2(g) + I2(g) 2HI(g)

(4) 2C(s) + O2(g) 2CO2(g)

Subtopic:  Kp, Kc & Factors Affecting them |
 94%
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NEET - 2010
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Which one of the following molecular hydrides acts as a Lewis acid?

(1) NH3         

(2) H2O         

(3) B2H6           

(4) CH4

Subtopic:  Acids & Bases - Definitions & Classification |
 85%
From NCERT
NEET - 2010
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If the concentration of OH- ions in the reaction

Fe(OH)3 (s) Fe3+ (aq) + 3OH-(aq) is decreased to 1/4 times, then equilibrium concentration of Fe3+ will increase by

(a) 8 times                            (b) 16 times

(c) 64 times                          (d) 4 times

Subtopic:  Kp, Kc & Factors Affecting them |
 84%
NEET - 2008
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Calculate the pOH of a solution at 25°C that contains 1x10-10 M of hydronium ions.

(a) 7.00                                 (b) 4.00

(c) 9.00                                 (d) 1.00

Subtopic:  pH calculation |
 83%
NEET - 2007
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At a certain temperature the following equilibrium is established, CO(g) + N02(g) CO2(g)+ NO(g)One mole of each of the four gas is mixed in one litre container and the reaction is allowed to reach equilibrium state. When excess of baryta water (Ba(OH)2) is added to the equilibrium mixture, the weight of white ppt (BaCO3) obtained is 236.4 gm. The equilibrium constant Kc of the reaction is (Ba = 137)

(1) 1.2

(2) 2.25

(3) 2.1

(4) 3.6

Subtopic:  Kp, Kc & Factors Affecting them |
 67%
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