(1 points) Suppose the above solution is cooled to 0 °C. How many grams of A would precipitate from the solution? What is the % recovery of A? % recovery=. mass "recovered" material (purified compound) mass of starting mixture (impure compound) 100
(1 points) Suppose the above solution is cooled to 0 °C. How many grams of A would precipitate from the solution? What is the % recovery of A? % recovery=. mass "recovered" material (purified compound) mass of starting mixture (impure compound) 100
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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I am only confused on part D of this problem. I understand that the 10g of A will dissolve completely and begin to precipitate at approx. 55 degrees celsius, but do not understand how to find the grams precipitated.
Transcribed Image Text:1) As you may recall from general chemistry, solubility is temperature dependent. Look at the
solubility-vs.-temperature data below for an organic compound A dissolved in water. (Solubility
charts report how much of a particular solute dissolves in a fixed amount of solvent. Typical units
are g/mL, i.e. grams solute per milliliter solvent.)
Temperature
(°C)
0
20
40
60
Solubility of A in 100ml of water (g)
1.5
3.0
6.5
11.0
80
17.0
A. (1 point) Plot temperature vs solubility and use the graph to answer the following
questions.
B. (1 point) Suppose 10 g of A and 100 mL of water were mixed and heated to 80 °C. Would
all A dissolve?
C. (1 point) Suppose the above solution is cooled. At approximately what temperature would
you expect to see A precipitate?
=
D. (1 points) Suppose the above solution is cooled to 0 °C. How many grams of A would
precipitate from the solution? What is the % recovery of A?
% recovery=
mass "recovered" material (purified compound)
mass of starting mixture (impure compound)
-100
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