The aqueous solution of a salt is alkaline. This shows that salt is made from:

1. a strong acid and strong base

2. a strong acid and weak base

3. a weak acid and weak base

4. a weak acid and strong base

Subtopic:  Acids & Bases - Definitions & Classification |
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40% of a racemic mixture of 0.2 moles of N2 and 0.6 moles of H2 react to give NH3 according to the equation, N2 (g) + H2(g)2NH3 (g) at constant temperature and pressure. Then the ratio of the final volume to the initial volume of gases is:

1. 4:5                       

2. 5:4

3. 7:10                     

4. 8:5

Subtopic:  Kp, Kc & Factors Affecting them |
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On addition of inert gas at constant volume to the reaction, N2 + 3H22NH3 at  equilibrium:

1. the reaction halts

2. forward reaction is favored

3. the reaction remains unaffected

4. backward reaction is favored

Subtopic:  Le Chatelier's principle |
 82%
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In which of the following case reaction goes farthest to completion?

1. K=103                                         

2. K=10-2

3. K=10                                           

4. K=100

Subtopic:  Introduction To Equilibrium | Kp, Kc & Factors Affecting them |
 76%
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For the reversible reaction,

N2 (g) + 3H2(g) 2NH3 (g) + heat

 the equilibrium shifts in forward direction                                   

1. by increasing the concentration of NH3 (g) 

2. by decreasing the pressure

3. by decreasing the concentrations of N2 (g)and H2(g)

4. by increasing pressure and decreassing temperature

 

Subtopic:  Le Chatelier's principle |
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The correct representation for the solubility product constant of Ag2CrO4 is:

1. [Ag+]2[CrO42-]                             

2. [Ag2+][CrO42-]

3. [2Ag+][CrO42-]                             

4. [2Ag+]2[CrO42-]

Subtopic:  Solubility Product |
 52%
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pH of a saturated solution of Ba(OH)2 is 12. The value of solubility product Ksp of Ba(OH)2 is

1. 3.3 x 10-7                         

2. 5.0 x 10-7

3. 4.0 x 10-6                         

4.  5.0 x 10-6

Subtopic:  Solubility Product |
 59%
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At a given temperature the Kc for the reaction,

PCl5 (g PCl3 (g) + Cl2 (g) is 2.4 x10-3. At the same temperature, the Kc for the reaction

PCl3 (g) + Cl2 (g PCl5 (g)  is :

1. 2.4x10-3           

2. -2.4 x10-3

3. 4.2 x10          

4.  4.8 x10-2

Subtopic:  Kp, Kc & Factors Affecting them |
 79%
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HI was heated in a sealed tube at 440°C till the equilibrium was reached. At this point, HI was found to be 22 % decomposed. The equilibrium constant for this dissociation is :

1. 0.28 2. 0.08
3. 0.02 4. 1.99
Subtopic:  Introduction To Equilibrium |
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28 g N2 and 6g H2 were mixed. At equilibrium 17 g NH3 was formed. the mass of N2 and H2 of equilibrium are respectively:

1. 11 g, zero                             

2. 1 g, 3 g

3. 14 g, 3 g                                 

4. 11 g, 3 g

Subtopic:  Introduction To Equilibrium |
 75%
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