c
                             \(CaCl_2     \to  Ca^{2+}      +   2Cl^{-}\)

વિયોજન પહેલાં	\(1\)	\(0\)	\(0\)
વિયોજન પછી	\(1 -\alpha\)	\(\alpha\)	\(2 \alpha\)

આપેલ, \(w\) \(= 20\,g\), \(V\) \(= 100\,mL\), \(T\) \(= 273\,K\),

\(CaCl_2\) નું અણુભાર  \(= 111\)

\({\pi _{Normal}}\,\, = \,\,\frac{w}{{mV}}\,\, \times \,\,S\,\, \times \,\,T\)

\( = \,\,\frac{{20\,\, \times \,\,1000\,\, \times \,\,0.821\,\, \times \,\,273}}{{111\,\, \times \,\,100}}\,\, = \,\,40.38\,\,atm\)

\(i\,\, = \,\,\frac{{1\,\, + \,\,2\alpha }}{1}\,\, = \,\,1\,\, + \;\,2\,\, = \,\,3\,\,\left( {\because \,\,\alpha \,\, = \,\,1} \right)\)

\({\pi _{\exp }}\,\, = \,\,1\,\, \times \,\,{\pi _{Normal}}\)

\({\pi _{\exp }}\,\, = \,\,40.38\,\, \times \,\,3\,\, = \,\,121.14\,\,atm\)