A) 0.0856
B) 0.0956
C) 0.1056
D) 0.1156
Correct Answer: C
Solution :
| [c] Weight of \[C{{H}_{3}}COOH\] dissolved = 5 g |
| Eq. of \[C{{H}_{3}}COOH\] dissolved \[=\frac{5}{60}\] |
| Volume of ethanol = 1 litre = 1000 ml. |
| \[\therefore \] Weight of ethanol =1000\[\times \]0.789 = 789 g |
| \[\therefore \] Molality of solution\[=\frac{\text{Moles}\,\text{of}\,\text{solute}}{\text{Weight}\,\text{of}\,\text{solvent}\,\text{in}}\] |
| \[=\frac{\frac{5}{60\times 789}}{1000}=0.1056\] |
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