Question

Pre-Laboratory Questions 1. The freezing point of 20.024 grams of distilled water was determined by recording a thermogram (see plot below). 1.006 grams of an unknown, nonelectrolyte compound was added to the water, and a second thermogram was recorded to determine the freezing point of the solution. Freezing Point Curves for Water and Unknown Nonelectrolyte Temperature, c -Water -0.270 °C Time, s a. Determine the freezing point depression, Tg, for the unknown solution. b. Determine the molality, m, of the unknown solution.

Answer 1

First question has been answered (first 4 sub-parts). Kindly post other question separately.

Note that for last part of first question 1 e.) , check the table 2 in data, and identify the compound with molar mass of about 322 g/mol. Also, since the solute is non-electrolyte, it will not dissociate into water and van't hoff factor, i will not come in picture.

Please see below for solution.

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