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#11 | Questions on Equivalent Concept
(Chemistry) > Some Basic Concepts Of Chemistry

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Concentrated nitric acid is 70% HNO3. The amount of concentrated nitric acid solution that should be used to prepare 250 mL of 2.0 M HNO3 would be:

1. 90.0 g conc. HNO3
2. 70.0 g conc. HNO3
3. 54.0 g conc. HNO3
4. 45.0 g conc. HNO3

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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
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The molality of a 15% (w/vol.) solution of H2SO4 of density 1.1g/cm3 is-

1. 1.2

2. 1.4

3. 1.8

4. 1.6

 51%
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Which mode of expressing concentration is independent of temperature?

1. Molality

2. Percent by mass

3. Mole fraction

4. All of the above 

 74%
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The molality of 1M solution of NaCl ( specific gravity 1.0585 g/mL ) is:

1. 1.0585

2. 1.0

3. 0.10

4. 0.0585

 58%
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