"How much amount of NaCl should be added to 600 g of water ($\rho$ = 1.00 g/mL) to decrease the freezing point of water to – 0.2 °C ? ______. (The freezing point depression constant for water = 2K kg mol–1)"

Question

Accepted Answer

"$\Delta$T_f = 0.2^o C

$\therefore$ $\Delta$T_f = ik_f.m

i = 2 for NaCl

$\therefore$ 0.2 = 2$\times$2$\times$${{{W_{NaCl}} \times 1000} \over {58.5 \times 600}}$

$\Rightarrow$ W_NaCl = ${{58.5 \times 600 \times 0.2} \over {4 \times 1000}}$ = 1.76 g"

How much amount of NaCl should be added to 600 g of water ($\rho$ = 1.00 g/mL) to decrease the freezing point of water to – 0.2 °C ? ______.
(The freezing point depression constant for water = 2K kg mol^–1)

Solution

About this question

Drill 25 more like these. Every day. Free.

How much amount of NaCl should be added to 600 g of water ($\rho$ = 1.00 g/mL) to decrease the freezing point of water to – 0.2 °C ? ______. (The freezing point depression constant for water = 2K kg mol–1)

Solution

About this question

More States of Matter questions

Drill 25 more like these. Every day. Free.

How much amount of NaCl should be added to 600 g of water ($\rho$ = 1.00 g/mL) to decrease the freezing point of water to – 0.2 °C ? ______.
(The freezing point depression constant for water = 2K kg mol^–1)