In the dissociation of 2HI H2 + I2, the degree of dissociation will be influenced by the:

1. addition of inert gas at constant volume

2. addition of inert gas at constant pressure

3. increase of temperature

4. increase of pressure

Subtopic:  Kp, Kc & Factors Affecting them |
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The correct order of increasing [H3O+] in the following aqueous solutions is:

1. 0.01 M H2S < 0.01 M H2SO4<0.01 M NaCl<0.01M NaNO2

2. 0.01 M NaCl< 0.01 M NaNO2<0.01 M H2S< 0.01 M H2SO4

3. 0.01 M NaNO2<0.01 M NaCl<0.01 M H2S<0.01 M H2SO4

4. 0.01 M H2S<0.01 M NaNO2<0.01 M NaCl<0.01 M H2SO4

Subtopic:  Kp, Kc & Factors Affecting them |
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If the pressure of N2 and H2 mixture in a closed apparatus is 100 atm and 20% of the mixture then reacts, the pressure at  the same temperature would be:

1. 100                   

2. 90

3. 85                     

4. 80

Subtopic:  Introduction To Equilibrium |
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The following reactions are known to occur in the body,

    CO2 + H2OH2CO3H+ + HCO3-                 

If CO2 escapes from the system, then:

1. pH will decrease

2. hydrogen ion concentration will diminish

3. H2CO3 concentration will be unaltered

4. the forward reaction will be promoted

Subtopic:  Le Chatelier's principle |
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Which salt undergoes hydrolysis?

1. CH3COONa                                     

2. KNO3

3. NaCl                                               

4. K2SO4

Subtopic:  Acids & Bases - Definitions & Classification |
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Buffer solution among the following options is :           

1. HNO2 and NaNO2           

2. NaOH and NaCl

3. HNO3 and NH4NO3         

4. HCl and KCl

Subtopic:  Buffer |
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According to Le-Chatelier's principle, adding heat to a solid ⇌ liquid equilibrium will cause the 

1. Temperature to increase

2. Temperature to decrease

3. Amount of liquid to decrease

4. Amount of solid to decrease

Subtopic:  Le Chatelier's principle |
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Ostwald's solution dilution law is applicable in the case of the solution of:

1. CH3COOH                                     

2. NaCl

3. NaOH                                           

4. H2SO4

Subtopic:  Introduction To Equilibrium |
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The pKa of acetylsalicylic acid (aspirin) is 3.5. The pH of gastric juice in the human stomach is about 2-3 and the pH in the small intestine is about 8. Aspirin will be:

1. Unionized in the small intestine and in the stomach

2. Completely ionized in the small intestine and in the stomach

3. Ionized in the stomach and almost unionized in the small intestine

4. Ionized in the small intestine and almost unionized in the stomach

Subtopic:  Kp, Kc & Factors Affecting them |
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What is [H+] in mol/L of a solution that is 0.20 M in CH3COONa and 0.10 M in CH3COOH?

(Ka for CH3COOH = 1.8 x 10-5)       

1. 3.5x10-4           

2. 1.1x10-5

3. 1.8x10-5           

4. 9.0x10-6

Subtopic:  Buffer |
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