$Ph-C{{H}_{2}}-CN\xrightarrow[\begin{smallmatrix}
\begin{matrix}
\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,O \\
\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,|| \\
(2)\,C{{H}_{3}}-C-Cl \\
\end{matrix} \\
(3)\,{{H}_{3}}{{O}^{\oplus }}/\Delta
\end{smallmatrix}]{(1)\,EtONa}(P);$ Product $(P)$ of the reaction will be
→A solution is prepared by dissolving $0.6\, g$ of urea (molar mass $= 60\, g\, mol^{-1}$) and $1.8\, g$ of glucose (molar mass $= 180\, g\, mol^{-1}$) in $100\, mL$ of water at $27\,^oC$. The osmotic pressure of the solution is : ............. $\mathrm{atm}$ $(R = 0.08206\, L\, atm\, K^{-1}\, mol^{-1})$
→In an experiment, $1\,g$ of a non-volatile solute was dissolved in $100\,g $ of acetone (mol. mass $= 58$) at $298\,K$. The vapour pressure of the solution was found to be $192.5\,\,mm\,Hg$. The molecular weight of the solute is (vapour pressure of acetone $= 195\,\,mm\,Hg$)
→$RMgX\xrightarrow{{\begin{array}{*{20}{c}}
O \\
{||} \\
{H - C - H}
\end{array}}}$ $\begin{array}{*{20}{c}}
{C{H_3} - CH - C{H_2} - OH} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{C{H_3}\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}
\end{array}$ Find out $R$ in this reaction
→