The elevation of boiling point of 0.10 m aqueous CrCl_3. x NH_3 solution is two times that of 0.05 m aqueous CaCl_2 solution. The value of x is \ \ \…

The elevation of boiling point of $\displaystyle 0.10$ m aqueous $\displaystyle \mathrm{CrCl}_3 . x \mathrm{NH}_3$ solution is two times that of $\displaystyle 0.05$ m aqueous $\displaystyle \mathrm{CaCl}_2$ solution. The value of $\displaystyle x$ is \_\_\_\_. [Assume $\displaystyle 100$% ionisation of the complex and $\displaystyle \mathrm{CaCl}_2$, coordination number of Cr as $\displaystyle 6$, and that all $\displaystyle \mathrm{NH}_3$ molecules are present inside the coordination sphere]