A) 2.63
B) 3.11
C) 0.381
D) 2.05
Correct Answer: A
Solution :
| [a] \[\Delta {{T}_{f}}=i\times {{K}_{f}}\cdot m\] |
| or \[i=\frac{\Delta {{T}_{f}}\times {{W}_{solvent}}}{{{K}_{f}}\times {{n}_{solute}}\times 1000}\] |
| \[=\frac{3.82\times 45}{1.86\times \left( \frac{5}{142} \right)\times 1000}\] |
| \[=2.63\] |
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