- 1(current)
Q. No.If 22 g of benzene is dissolved in 122 g of carbon tetrachloride then the mass percentage of benzene (C6H6) and carbon tetrachloride (CCl4) are respectively:
1. 86.32 %; 13.68 %
2. 13.68 %; 86.32 %
3. 84.72 %; 15.28 %
4. 15.28 %; 84.72 %
1. 86.32 %; 13.68 %
2. 13.68 %; 86.32 %
3. 84.72 %; 15.28 %
4. 15.28 %; 84.72 %
Subtopic: Concentration Terms & Henry's Law |
69%
From NCERT
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What is the mole fraction of benzene in a solution that contains 30% benzene by mass in carbon tetrachloride?
1. 0.528
2. 0.618
3. 0.458
4. 0.338
1. 0.528
2. 0.618
3. 0.458
4. 0.338
Subtopic: Concentration Terms & Henry's Law |
58%
From NCERT
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The molarity of 30 g Co(NO3)2. 6H2O in 4.3 L of solution is:
1. 0.053 M
2. 0.043 M
3. 0.023 M
4. 0.063 M
Subtopic: Concentration Terms & Henry's Law |
67%
From NCERT
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What mass of urea (NH₂CONH₂) is needed to prepare 2.5 kg of a 0.25 molal solution?
| 1. | 39 g | 2. | 37 g |
| 3. | 41 g | 4. | 35 g |
Subtopic: Concentration Terms & Henry's Law |
82%
From NCERT
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Calculate the molarity of the KI solution, provided its density is 1.202 g mL-1 and it consists of a 20% (mass/mass) concentration.
1. 1.25 M
2. 1.95 M
3. 1.45 M
4. 2.15 M
1. 1.25 M
2. 1.95 M
3. 1.45 M
4. 2.15 M
Subtopic: Concentration Terms & Henry's Law |
64%
From NCERT
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The solubility of H2S in water at STP is 0.195 m, The value of Henry’s law constant will be:
| 1. | 274 atm | 2. | 285 atm |
| 3. | 295 atm | 4. | 278 atm |
Subtopic: Concentration Terms & Henry's Law |
55%
From NCERT
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Henry’s law constant for CO2 in water is 1.67 × 108 Pa at 298 K. The quantity of CO2 in 500 mL of soda water when packed under 2.5 atm CO2 pressure at 298 K is:
| 1. | 1.24 g | 2. | 1.45 g |
| 3. | 1.65 g | 4. | 1.85 g |
Subtopic: Concentration Terms & Henry's Law |
From NCERT
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The molarity of solution obtained when 30 mL of 0.5 M H2SO4 solution diluted to 500 mL is:
| 1. | 0.03 M | 2. | 0.0003 M |
| 3. | 3.0 M | 4. | 30 M |
Subtopic: Concentration Terms & Henry's Law |
83%
From NCERT
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The density of 20% (mass/mass) aqueous KI is 1.202 g mL–1. The molality of KI solution is:
| 1. | 1.21 m | 2. | 1.91 m |
| 3. | 1.71 m | 4. | 1.51 m |
Subtopic: Concentration Terms & Henry's Law |
57%
From NCERT
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The density of 20% (mass/mass) aqueous KI is 1.202 g mL–1. The mole fraction of KI in the solution is:
1. 0.0223
2. 0.0343
3. 0.0163
4. 0.0263
1. 0.0223
2. 0.0343
3. 0.0163
4. 0.0263
Subtopic: Concentration Terms & Henry's Law |
56%
From NCERT
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- 1(current)
Q. No.
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