c
\(\mathrm{NaCl} \longrightarrow \mathrm{Na}^{+}+\mathrm{Cl}^{-}\)

\(0.05 \mathrm{M} \quad 0.05 \mathrm{M} \quad 0.05 \mathrm{M}\)

\(\text { Total } \mathrm{C}_1=0.05+0.05=0.1 \mathrm{M}(\mathrm{NaCl})\)

\(\mathrm{C}_2=0.2 \mathrm{M}(\text { glucose })\)

\(\pi=\left(\mathrm{C}_2-\mathrm{C}_1\right) \mathrm{RT}\)

\(=(0.2-0.1) \times 0.083 \times 300\)

\(=2.49 \text { bar }\)

\(=24.9 \times 10^{-1} \text { bar }\)