Answer to Question #317334 in General Chemistry for yow

Question

Sodium chloride is often used to prevent icy roads and to freeze ice cream. What are the boiling and freezing points of a 0.029m aqueous solution of sodium chloride? (i = 2)

Answer 1

∆T_b = i × K_b × m = 2 x 0.51°C/m × 0.029 m = 0.03°C

T_sol = 100°C + 0.03°C = 100.03°C

∆T_f = i × K_f × m = 2 × 1.86°C/m × 0.029 m = 0.11°C

T_sol = 0°C - 0.11°C = -0.11°C