The value of Henry's constant KH:

1. Increases with an increase in temperature.
2. Decreases with an increase in temperature.
3. Remains constant.
​​​​​​
4. First increases then decreases.

Subtopic:  Concentration Terms & Henry's Law |
 63%
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The mole fraction of ethylene glycol (C2H6O2) in a solution containing 20% of C2H6O2 by mass is:

1. 0.932
2. 0.0672

3. 0.832

4. 0.732

Subtopic:  Concentration Terms & Henry's Law |
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If N2 gas is bubbled through water at 293 K, how many millimoles of N2 gas would dissolve in 1 litre of water?
(
Partial pressure of nitrogen = 0.987 bar, Henry’s law constant for N2 at 293 K = 76.48 kbar).

1. 0.716 mmol

2. 0.616 mmol

3. 0.726 mmol

4. 0.516 mmol

Subtopic:  Concentration Terms & Henry's Law |
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The partial pressure of ethane over a saturated solution containing 6.56 X 10-2 g of ethane is 1 bar. If the solution contains 5.00 X 10-2 g of ethane, then what shall be the partial pressure of the gas?

1. 0.76 bar

2. 0.16 bar

3. 1.16 bar

4. 3.12 bar

Subtopic:  Concentration Terms & Henry's Law |
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The mole fraction of glucose (C6H12O6) in an aqueous binary solution is 0.1. The mass percentage of water in it to the nearest integer is:
1. 44%
2. 49 %
3. 47 %
4. 41 %

Subtopic:  Concentration Terms & Henry's Law |
 60%
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The solubility of potassium nitrate in water increases with temperature. A saturated solution of potassium nitrate at 80 °C is cooled to 25 °C in a closed container. Which of the following statements is/are correct?
(A) The mass of undissolved potassium nitrate will increase.
(B)  The concentration of the potassium nitrate solution remains the same.
(C) The total mass of solvent present remains the same.
 
1. B and C only 2. A and C only
3. A only 4. B only
Subtopic:  Concentration Terms & Henry's Law |
 61%
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