1.

\left. \begin{array} { l } { ( 1 ) 4.06 \text { atm } } \\ { ( 3 ) 40.6 \text { atm } } \end{array} \right.

Answer»

2 molal solution means 1000g solvent contains 2 moles sucrose.It means 1000g solvent contains 2x342 = 648g sucroseMass of solution = 1648 g.Volume of solution = 1648/1.4 = 1.17LMolarity of solution = 2/1.17= 1.709M

Osmotic pressure = CRTOsmotic pressure = 1.709x0.0821x298 = 40.6 atm

very correct



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