| 1 |
For which system does the equilibrium constant K<sub>c</sub>has units of (concentration)<sup>-1</sup> |
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| 2 |
pH of rain water. |
- A. 7
- B. Slightly basic
- C. slightly acidic
- D. Highly basic
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| 3 |
pH of buffer is calculated by. |
- A. Sorenson equation
- B. Mosley equation
- C. Henderson equation
- D. De broglie equation
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| 4 |
An excess of aqueous silver nitrate is added to aqueous barium chloride and precipitate is removed by filtration. What are the main ions in the filtrate |
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| 5 |
The pH of 10-3 mole dm-3 of an aqueous solution of H2SO4 is. |
- A. 3.0
- B. 2.7
- C. 2.0
- D. 1.5
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| 6 |
The value of pH and P<sup>oH</sup>of pure water at 25° C is |
- A. 14
- B. 7
- C. 1 x 10<sup>-14</sup>
- D. 1 x 10<sup>14</sup>
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| 7 |
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
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| 8 |
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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| 9 |
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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| 10 |
Which acid has less value of pKa. |
- A. CH3COOH
- B. H2S
- C. H2CO3
- D. HCl
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