## Chemistry and Chemical Reactivity (9th Edition)

$-0.36^{\circ}C$
Molality: $(15\ g\div 342.30\ g/mol)\div0.225\ kg=0.195\ m$ Freezing point depression: $\Delta T_f=K_fm=-1.86^{\circ}C/m\times0.195\ m=-0.36^{\circ}C$ Freezing point $-0.36^{\circ}C$