1. You will be separating a binary mixture in this experiment. What are the two compounds in the binary mixture in this experiment? 2. The separation will be quite simple because one of the compounds is soluble in water and one is not. Which compound in the mixture is soluble and which is not? 3. From your reading of the experiment and the flow chart, come up with reasonable definitions or explanations of the terms residue and filtrate.
1. You will be separating a binary mixture in this experiment. What are the two compounds in the binary mixture in this experiment? 2. The separation will be quite simple because one of the compounds is soluble in water and one is not. Which compound in the mixture is soluble and which is not? 3. From your reading of the experiment and the flow chart, come up with reasonable definitions or explanations of the terms residue and filtrate.
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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Purpose and Flow Chart for the Experiment
In this experiment, you will separate the components of a binary mixture of sand and
sodium chloride. You will collect data which will give you the information to calculate the
percentage of each component in the mixture and to calculate the percent of recovery for the
experiment.
The flow chart below summarizes the different steps you will take to complete the
experiment. This schematic represents the series of operations involved.
After drying and weighing the two components, you will calculate the percentage of each
component in the mixture. You will then calculate the percent recovery of the components in the
mixture.
Beaker #1
Sio, (s) + NaCl (s)
Add water and
perform gravity
filtration
Filtrate
NacI (aq)
Residue
SiO, (s)
Dry in Oven
@ 125° C
Evaporation to Dryness
on a Hot Plate
Cool to room temperature
and obtain mass of dry
filter paper and sand
Cool to room temperature
and obtain mass of dry
Naci
(g part)
(g whole)
% by mass =
х 100
% recovery = (g SiO, + g NaCl) x 100
(g original sample)
% error =L(g SiO, +NaCl - g original sample) | x 100
(g original sample)
Fundamental Chemistry I
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Arkansas Scholastic Press

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A student performed the experiment correctly and the initial massing correctly, but forgot to mass
the crucible cover after heating. What errors would this cause in the calculation of the percent of
water in the hydrate? Be specific.
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Fundamental Chemistry I
Arkansas Scholastic Press
Lab 6. Separating the Components of a Binary Mixture
Lab 6 Pre-Lab
Name:
Date:
Instructor:
Time & Day of lecture:
1. You will be separating a binary mixture in this experiment. What are the two compounds in
the binary mixture in this experiment?
2. The separation will be quite simple because one of the compounds is soluble in water and one
is not. Which compound in the mixture is soluble and which is not?
3. From your reading of the experiment and the flow chart, come up with reasonable definitions
or explanations of the terms residue and filtrate.
4. A student was asked to determine the percentage of the components of a binary mixture
of KBr, potassium bromide, and Mg (OH),, magnesium hydroxide. The mass of the mixture
used was 6.321 grams. The student extracted the KBr with water since KBr is soluble in water
and Mg(OH), is not. The magnesium hydroxide remained in the container after the KBr was
extracted with water.
After evaporation of the filtrate, the KBr residue was dried and weighed. Its dry mass was
found to be 2.864g. The insoluble Mg(OH), was also dried and had a mass of 3.204 grams.
a. Calculate the percent of KBr in the mixture.
b. Calculate the percent of Mg(OH), in the mixture.
c. Calculate the percent of recovery using the total mass of substances recovered.
d. Calculate the percent error of this total recovery.
Fundamental Chemistry I
37
Arkansas Scholastic Press
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