The density of 1 M solution of a compound 'X' is 1.25 g mL-1. The correct option for the molality of  solution is:
(Molar mass of compound X = 85 g): 
1. 0.705 m  2. 1.208 m 
3. 1.165 m  4. 0.858 m 
Subtopic:  Concentration Based Problem |
 64%
From NCERT
NEET - 2023
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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 |
 68%
From NCERT
NEET - 2019
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NEET 2023 - Target Batch - Aryan Raj Singh
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NEET 2023 - Target Batch - Aryan Raj Singh