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 |
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If 500 mL of a 5 M solution is diluted to 1500 mL, the molarity of the resultant solution is: 

1. 1.5 M

2. 1.66 M

3. 0.017 M

4. 1.59 M

Subtopic:  Concentration Based Problem |
 82%
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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, CO32-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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If 4 g of NaOH dissolves in 36 g of H2O, the molarity of the solution is: (specific gravity of solution is 1 g mL-1) : 

1. 3 M 2. 3.5 M
3. 2.5 M 4. 2 M
Subtopic:  Concentration Based Problem |
 72%
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The density of a 2 M aqueous solution of NaOH is 1.28 g/cm3. The molality of the solution is: 
[molecular mass of NaOH = 40 gmol-1]

1. 1.20 m 2. 1.56 m
3. 1.67 m 4. 1.32 m
Subtopic:  Concentration Based Problem |
 70%
From NCERT
NEET - 2019
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The molality of a 20% (by mass) CaCO3 solution is : 
(Given: Density of solution is 1.2 gm/ml)

1. 1.25 m 2. 2.5 m
3. 2.08 m 4. 1.5 m
Subtopic:  Concentration Based Problem |
 67%
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The total molarity of all the ions present in  0.1 M of CuSO4 and 0.1 M of Al2(SO4)3 solution is:

1. 0.2M

2. 0.7M

3. 0.8M

4. 1.2M

Subtopic:  Concentration Based Problem |
 63%
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