What is the expected value of $\Delta T_f$ for $1.25 \ m$ $CaCl_2$ solution if $1.25 \ m$ sucrose solution has $\Delta T_f$ value $x \ K$?
- A$x \ K$
- B$\frac{x}{2} \ K$
- C$2 x \ K$
- D$3 x \ K$
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