- 1(current)
Q. No.The mole fraction of the solute in a 1.00 molal aqueous solution is:
| 1. | 0.00177 | 2. | 0.0344 |
| 3. | 0.0177 | 4. | 0.1770 |
Subtopic: Concentration Based Problem |
Level 3: 35%-60%
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What is the concentration of nitrate ions in 40.0 mL of a 0.25 M solution of copper(II) nitrate?
1. 0.010 M
2. 0.020 M
3. 0.050 M
4. 0.50 M
1. 0.010 M
2. 0.020 M
3. 0.050 M
4. 0.50 M
Subtopic: Concentration Based Problem |
Level 3: 35%-60%
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Hints
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A solution contains 25% water (\(H_2O\)), 25% ethanol \((C_2H_5OH)\) and 50% acetic acid \((CH_3COOH)\) by mass.
Which of the following pairs correctly matches a substance with its mole fraction?
(a) Water \(=0.502\)
(b) Ethanol \(=0.302\)
(c) Acetic acid \(=0.196\)
(d) Ethanol + Acid \(=0.497\)
Choose the correct option:
1. (a) and (b)
2. (c) and (d)
3. (a) and (d)
4. None of the above
Which of the following pairs correctly matches a substance with its mole fraction?
(a) Water \(=0.502\)
(b) Ethanol \(=0.302\)
(c) Acetic acid \(=0.196\)
(d) Ethanol + Acid \(=0.497\)
Choose the correct option:
1. (a) and (b)
2. (c) and (d)
3. (a) and (d)
4. None of the above
Subtopic: Concentration Based Problem |
56%
Level 3: 35%-60%
Please attempt this question first.
Hints
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- 1(current)
Q. No.
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