| 1 |
The effect of temperature on equilibrium was studied by |
- A. Lewis
- B. Van der wall
- C. Arrhenius
- D. Vant hoff
|
| 2 |
The pH of 10<sup>-3</sup>mol dm<sup>-3</sup>of an aqueous solution of H<sub>2</sub>SO<sub>4</sub>is |
- A. 3.0
- B. 2.7
- C. 2.0
- D. 1.5
|
| 3 |
When solid KI dissolved in water, its heat of solution is positive. What would happen to dissolution when temperature is increased. |
- A. Increases
- B. Decreases
- C. Remain same
- D. Firs increases than decreases
|
| 4 |
Le-Chatelier Braun principle is sometimes known as |
- A. Law of mass action
- B. Law of mobile equilibrium
- C. Law of active mass
- D. All of these above
|
| 5 |
Optimum pressure in Haber's process for synthesis of Ammonia is |
- A. 100 -150 atm
- B. 200- 300 atm
- C. 350 - 450 atm
- D. 500 - 600 atm
|
| 6 |
The relationship between K<sub>p</sub>and K<sub>c</sub>is given by |
|
| 7 |
The solubility product of AgCI is 2.0 x 10<sup>-10</sup>mol<sup>2</sup>dm<sup>-6</sup>The maximum concentration of Ag<sup>+</sup>ions in the solution is |
- A. 2.0 x 10<sup>-10</sup>mol dm<sup>-3</sup>
- B. 1.41 x 10<sup>-5</sup>mol dm<sup>-3</sup>
- C. 1.0 x 10<sup>-10</sup>mol dm<sup>-3</sup>
- D. 4.0 x 10<sup>-20</sup>mol dm<sup>-3</sup>
|
| 8 |
Which statement about the following equilibrium is correct |
- A. The value of K<sub>p</sub>falls with a rise in temperature
- B. The value of K<sub>p</sub>falls with increasing pressure
- C. Adding V<sub>2</sub>O<sub>5</sub>catalyst increase the equilibrium yield of sulphur trioxide
- D. The value of K<sub>p</sub>is equal to K<sub>c</sub>
|
| 9 |
Which one of the following has highest pH |
- A. Distilled water
- B. 1 M NH4OH
- C. 1 M NaOH
- D. Water saturated with chlorine gas
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| 10 |
pKa of CH3COOH is 4.74. The pKb value of CH3COO- ions will be |
- A. 7
- B. 14
- C. 9.26
- D. zero
|