| 1 |
A solution has pH zero. Its H+ ions concertation will |
- A. zero
- B. More than unity
- C. Less than unity
- D. Unity only
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| 2 |
When concentration of one product is removed at equilibrium stage, in which direction it moves to reestablish equilibrium. |
- A. Forward
- B. Reverse
- C. Neither forward nor reverse
- D. Equally move in both direction
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| 3 |
A chemical reaction A ---------- B is said to be in equilibrium when |
- A. Complete conversion of A to B has taken place
- B. Conversion of A to B is 50% complete
- C. Rate of transformation of A to B is equal to B to A
- D. 50% Reactant have been changed to B
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| 4 |
The relationship between K<sub>p</sub>and K<sub>c</sub>is given by |
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| 5 |
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
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| 6 |
When HCl is added to H2S aqueous solution, Its ionization |
- A. Decrease
- B. Increase
- C. Remains constant
- D. First increases than decreases
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| 7 |
K<sub>a</sub>and K<sub>b</sub>of a conjugate acid and are related with k<sub>w</sub>as |
- A. K<sub>a </sub>+ K<sub>b</sub>=K<sub>w</sub>
- B. K<sub>a</sub>-K<sub>b</sub>=K<sub>w</sub>
- C. K<sub>a </sub>.<sub></sub>K<sub>b</sub>= K<sub>w</sub>
- D. K<sub>a</sub>/ K<sub>b</sub>= K<sub>w</sub>
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| 8 |
Which statement is correct about solubility product constant. |
- A. It is applicable at highly soluble substances.
- B. Value of Kap is independent of temperature
- C. It is used for homogeneous aquarium system
- D. It can be used to predict that precipitation will take place or not by combining two ions
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| 9 |
Almost forward reaction is complete when value of Kc is |
- A. very high
- B. Very small
- C. Neither large nor very small
- D. No correlation
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| 10 |
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>
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