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a) What is the freezing point depression caused by adding NaCl to the water? b) The freezing point depression can be calculated using the equation, where DT is the change in freezing point, i is the number of ions in the solution per mole of dissolved NaCl (i = 2), m is the molality of the solution, and Kf  is the molal freezing point constant for water which is 1.86°C/m.  Using this equation and the data recorded above, calculate the molar mass for NaCl. Compare with the accepted value. ---- Here is some data I made up for the problems: Mass NaCl 4 g Mass Water 99.8 g Mass Ice 50 g Mass water+ ice 150 g min. temp -2 C density of water @ 25 C 0.998 g/mL

a) What is the freezing point depression caused by adding NaCl to the water? b) The freezing point depression can be calculated using the equation, where DT is the change in freezing point, i is the number of ions in the solution per mole of dissolved NaCl (i = 2), m is the molality of the solution, and Kf  is the molal freezing point constant for water which is 1.86°C/m.  Using this equation and the data recorded above, calculate the molar mass for NaCl. Compare with the accepted value. ---- Here is some data I made up for the problems: Mass NaCl 4 g Mass Water 99.8 g Mass Ice 50 g Mass water+ ice 150 g min. temp -2 C density of water @ 25 C 0.998 g/mL

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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a) What is the freezing point depression caused by adding NaCl to the water?

b) The freezing point depression can be calculated using the equation, where DT is the change in freezing point, i is the number of ions in the solution per mole of dissolved NaCl (i = 2), m is the molality of the solution, and Kf  is the molal freezing point constant for water which is 1.86°C/m.

 Using this equation and the data recorded above, calculate the molar mass for NaCl. Compare with the accepted value.

----

Here is some data I made up for the problems:

Mass NaCl 4 g

Mass Water 99.8 g

Mass Ice 50 g

Mass water+ ice 150 g

min. temp -2 C

density of water @ 25 C 0.998 g/mL

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