Answer to Question #319403 in General Chemistry for Zaza

Question

Calculate the boiling point and freezing point of the following solutions:

1) 0.575 molal aqueous solution

2) 10 g of CH,0 dissolved in 259 g water.

3) 0.5 mole Br, dissolved in 507 g chloroform

Answer 1

1. ∆T_b = 0.299 °C, then T_b = 100.299 °C

∆Tf = 1.069 °C, тогда T_f = - 1.069 ° C

2. ∆T_b = 0.111 °C, then T_b = 100.111 °C

∆T_f = 0.398 °C, then T_f = - 0.398 °C

3. ∆T_b = 4.88 °C, then T_b = 81.58 °C

∆ T_f = 29.58 ° C, then T_f = -52.58 °C