\(M_1V_1\) \(=\) \(M_2V_2\)
\(10\,M\) \(HCl\) \( =\) \(5\,M\) \(HCl\)
\(10 \times V_1\) \(=\) \(5 \times 2.00\)
\({V_1}\,\, = \,\,\frac{{5\,\, \times \,\,2.00}}{{10}}\,\, = \,\,1.00\,\,L\)
$(M.wt.$ of $CuCl_2 =134.4 $ અને $K_b = 0.52\, , molal^{-1})$
[આપેલ છે: ${K}_{{f}}=1.86 \,{~K} \,{~kg} \,{~mol}^{-1} ;$ પાણીની ઘનતા $=$ $1.00 \,{~g}\, {~cm}^{-3} ;$ પાણીનું ઠારબિંદુ $\left.=273.15\, {~K}\right]$