Part A: Determination of Densities of Pure Water and Calcium Chloride Solutions (1) Temperature of water (to nearest 0.5 °C) 22.5 °C (2) Mass of empty volumetric flask with stopper 20.3872 g (3) Mass of volumetric flask, stopper, and water 21.3762 d (4) Mass of water in the volumetric flask (5) Calculated density of water at temperature (4) / 1.00 mL) - g/mL

Part A: Determination of Densities of Pure Water and Calcium Chloride Solutions (1) Temperature of water (to nearest 0.5 °C) 22.5 °C (2) Mass of empty volumetric flask with stopper 20.3872 g (3) Mass of volumetric flask, stopper, and water 21.3762 d (4) Mass of water in the volumetric flask (5) Calculated density of water at temperature (4) / 1.00 mL) - g/mL

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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Concept explainers

Stoichiometry

Stoichiometry is a chemical division that evaluates the quantitative content of the chemical process with the help of the reacting molecules or products taking part in the reaction. The term “stoicheion” in “Stoichiometry”, is an old Greek term for "element" whereas “metron” means "measure".

Question

10.%
20.%
25%
30.%
40.%
50.%
Unknown
(7)
solution
solution
solution
solution
solution
solution
solution
Mass of stoppered
flask containing
Solution (g)
21.4707
21.5647
21.6253
21.6692
21.7823
21.8699
21.7699
Mass of Solution
(3)
Volume of
Solution
1.00 mL
1.00 mL
1.00 mL
1.00 mL
1.00 mL
1.00 mL
1.00 mL.
Density of
Solution (g/mL)
(8)
Plot the data:
a. Graph density (r-axis) vs. mass % (x-avis). The data point for deionized water (0% CaClh) should
also be included on the graph.
b. Scale and label each axis properly, title the graph appropriately.
c. Include best-fit linear trendline and equation on graph.
Determine Mass% CaCh in unknown solution from trendline equation on graph:
Show work:
(10)
Specific gravity of 50% by mass solution:

Part A: Determination of Densities of Pure Water and Calcium Chloride Solutions
(1) Temperature of water (to nearest 0.5 °C)
22.5 °C
(2) Mass of empty volumetric flask with stopper
20.3872 g
(3) Mass of volumetric flask, stopper, and water
21.3762 g
(4) Mass of water in the volumetric flask
g
(5) Calculated density of water at temperature (4) / 1.00 mL)
g/mL
(6) Density of water at temperature (from CRC Handbook
or https://www.simetric.co.uk/si water.htm)
g/mL
Show Percent Error Calculation:
10.%
20.%
25%
30.%
40.%
50.%
Unknown
(7)
solution
solution
solution
solution
solution
solution
solution
Mass of stoppered
flask containing
Solution (g)
21.4707
21.5647
21.6253
21.6692
21.7823
21.8699
21.7699
Mass of Solution
Volume of
Solution
1.00 mL
1.00 mL
1.00 mL
1.00 mL
1.00 mL
1.00 mL
1.00 mL

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