| 1 |
The relationship between K<sub>p</sub>and K<sub>c</sub>is given by |
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| 2 |
Which one of the following aqueous solutions has the highest pH |
- A. 0.1 M NaOH
- B. 0.1 M HCl
- C. 0.2 M H2SO4
- D. 0.1 M HNO3
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| 3 |
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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| 4 |
For which system does the equilibrium constant K<sub>c</sub>has units of (concentration)<sup>-1</sup> |
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| 5 |
The pH of human blood is |
- A. 7.0
- B. 7.4
- C. 4.0
- D. 6.5
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| 6 |
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
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| 7 |
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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| 8 |
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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| 9 |
At equilibrium stage of chemical reaction |
- A. The concentration of reaction is equal to concentration of products
- B. The rate constant of forward reaction is equal to rate constant of backward reaction
- C. The rate of forward reaction is equal rate of backward reaction
- D. The energy of activation of forward step is equal to energy of activation of backward step
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| 10 |
The pK<sub>a</sub>value of CH<sub>3</sub>COOH is 4.74 when we mix CH<sub>3</sub>COOH and CH<sub>3</sub>COONa in the ratio of 10:1, tehn the pH of the buffer is |
- A. 4.74
- B. 5.74
- C. 3.74
- D. 7.00
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