Calculate  the mole fraction of the solute in a 1.00 m aqueous solution.

1. 0.177
2. 0.771
3. 0.0534
4. 0.0177

Subtopic:  Concentration Based Problem |
68%
From NCERT
NEET - 2015
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The weight of 70 % HNOconcentrated nitric acid solution that should be used to prepare 250 mL of 2.0 M HNO3  is:
1. 90.0 g conc. HNO3
2. 70.0 g conc. HNO3
3. 54.0 g conc. HNO3
4. 45.0 g conc. HNO3
Subtopic:  Concentration Based Problem |
64%
From NCERT
AIPMT - 2013
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6.02 × 1020 molecules of urea are present in 100 mL of its solution. The concentration of the solution is:
1. 0.01 M
2. 0.001 M
3. 0.1 M
4. 0.02 M
Subtopic:  Concentration Based Problem |
77%
From NCERT
AIPMT - 2013
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Mole fraction of solute in a 1.00 molal aqueous solution is:
1.  0.0177
2.  0.0344
3.  1.770
4.  0.1770

Subtopic:  Concentration Based Problem |
82%
From NCERT
AIPMT - 2011
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25.3 g of sodium carbonate, Na2CO3, is dissolved in enough water to make 250 mL of a solution. If sodium carbonate completely dissociates, the molar concentrations of sodium ion, Na+ and carbonate ion, $C{O}_{3}^{2-}$are respectively:
(molar mass of Na2CO3 = 106g mol-1)

1. 0.955 M and 1.910 M
2. 1.910 M and 0.955 M
3. 1.90 M and 1.910 M
4. 0.477 M and 0.477 M

Subtopic:  Concentration Based Problem |
71%
From NCERT
AIPMT - 2010
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The volume occupied by one water molecule (density = 1 g cm-3) is:

1. $9.0×{10}^{-23}$  ${\mathrm{cm}}^{3}$

2. $6.023×{10}^{-23}$  ${\mathrm{cm}}^{3}$

3. $3.0×{10}^{-23}$  ${\mathrm{cm}}^{3}$

4. $5.5×{10}^{-23}$  ${\mathrm{cm}}^{3}$

Subtopic:  Concentration Based Problem |
65%
From NCERT
AIPMT - 2008
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Concentrated aqueous sulphuric acid is 98% H2SO4 by mass and has a density of 1.80 g mL-1. The volume of acid required to make one litre of 0.1 M H2SO4 solution is:

1. 11.10 mL

2. 16.65 mL

3. 22.20 mL

4. 5.55 mL

Subtopic:  Concentration Based Problem |
63%
From NCERT
AIPMT - 2007
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