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’m not sure if I calculated the moles and molar concentration correctly for table 3, based on data from table 2.

Transcribed Image Text:1 (blank)
2
3
4
Test
Tube
(blank)
2
3
4
Fe(NO3)3
5
5
5
5
5
5
0
0.5
1
1.5
2
5
4.5
4
3.5
3
(ML)
10
10
10
10
10
Table 2. Calibration
Solution Measured Volumes
mL of
Total
mL of
mL of
0.00200 M
0.10 M
Volume
0.200 M
Fe(NO3)3
NaSCN
HNO3
(mL)
5.0ml
0
4.98m 9.98m
5.0ml 0.50ml 4.40ml 9.9ml
4.98ml ml
4.0ml 9.98m
5.0ml 1.50ml 3.45m9.95ml
5.0ml 2.0ml 3.0ml 10ml
D. Calculate
number of mo
those values
calculated the
notebook. (
E. Determi
each test tu
Table 3. C
Test
Tube
C. Stopper each test tube and shake well to mix the
solutions. Clean and dry the stopper before using it
to stopper the next test tube.
Key Questions
12. Compare the original molarities of the Fe(NO3)3
solution and the NaSCN solution. How much more
concentrated is the Fe(NO3)3 than the NaSCN solution?
(1x 5x 100x 1000x ota)
02
2
3
4
5
Tra
Pro
16.
you
Fe
F.
![?
all
team
calculated the number of moles of each reactant in your
notebook. (Don't forget [] = M = mol/L.)
E. Determine the molar concentration of FeSCN2+ in
each test tube and record those values in Table 3.
Table 3. Calculation of FeSCN2+ Concentrations
Test Moles of Moles of Moles of
molarity
Fe³+
Tube
SCN¹- FeSCN2+ [FeSCN²
0.001
O
O
O
0.001
1×106 1×1061.002 x104
0.00998 2x10 2x104 2.02x104
0.001 3x10
3x104 3.01 ×10-4
0.001 4x10 4x10 4x104
Transfer the [FeSCN2+] value to Table 4 for each tube.
1
2
3
4
5
Problem
16. For each of your test tube solutions, show how
your team calculated the molar concentration of
FeSCN²+. (Hint: what volume of solution was made?)](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F012728a2-689e-4561-aa41-250aa26ea002%2Fc5fbb0a1-66f6-4e67-9804-14a4c0ed7b5f%2Fksd2zr_processed.jpeg&w=3840&q=75)
Transcribed Image Text:?
all
team
calculated the number of moles of each reactant in your
notebook. (Don't forget [] = M = mol/L.)
E. Determine the molar concentration of FeSCN2+ in
each test tube and record those values in Table 3.
Table 3. Calculation of FeSCN2+ Concentrations
Test Moles of Moles of Moles of
molarity
Fe³+
Tube
SCN¹- FeSCN2+ [FeSCN²
0.001
O
O
O
0.001
1×106 1×1061.002 x104
0.00998 2x10 2x104 2.02x104
0.001 3x10
3x104 3.01 ×10-4
0.001 4x10 4x10 4x104
Transfer the [FeSCN2+] value to Table 4 for each tube.
1
2
3
4
5
Problem
16. For each of your test tube solutions, show how
your team calculated the molar concentration of
FeSCN²+. (Hint: what volume of solution was made?)
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