Chemistry for Engineering Students
4th Edition
ISBN:9781337398909
Author:Lawrence S. Brown, Tom Holme
Publisher:Lawrence S. Brown, Tom Holme
Chapter4: Stoichiometry
Section: Chapter Questions
Problem 4.98PAE
Related questions
Question
Chemistry
Can someone please explain how to find the concentration iron III thiocyanate ion (m)?
![Lab Data
Color of iron(III) nitrate
Concentration potassium thiocyanate
[KSCN] (M)
Color of potassium thiocyanate
Volume iron(III) nitrate (ml)
Volume potassium thiocyanate (mL)
Volume DI water (mL)
Concentration iron(III) thiocyanate ion in stock solution
[FeSCN²+] (M)
Color of stock solution
Concentration iron(III) nitrate
[Fe(NO3)3] (M)
Diluted solutions
Volume stock solution (mL)
Volume DI water (mL)
Concentration iron(III) thiocyanate ion
[FeSCN²+] (M)
Calibration curve
Solution
Stock
Solution 1
Solution 2
Solution 3
Solution 1
Molar absorptivity (M¹cm¹)
4.00
1.00
Concentration iron(III) thiocyanate ion.
[FeSCN²+] (M)
Solution 2
4.00
2.00
0.40000
yellow
0.00300
colorless
10.00
2.00
8.00
0.000300
red-orange
Solution 3
4.00
3.00
Absorbance](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F0135de79-7311-4e3f-ae98-034619e1876b%2F72f9f6bd-1a87-42f0-b36a-98d4b50e16d5%2Fu515vz3j_processed.jpeg&w=3840&q=75)
Transcribed Image Text:Lab Data
Color of iron(III) nitrate
Concentration potassium thiocyanate
[KSCN] (M)
Color of potassium thiocyanate
Volume iron(III) nitrate (ml)
Volume potassium thiocyanate (mL)
Volume DI water (mL)
Concentration iron(III) thiocyanate ion in stock solution
[FeSCN²+] (M)
Color of stock solution
Concentration iron(III) nitrate
[Fe(NO3)3] (M)
Diluted solutions
Volume stock solution (mL)
Volume DI water (mL)
Concentration iron(III) thiocyanate ion
[FeSCN²+] (M)
Calibration curve
Solution
Stock
Solution 1
Solution 2
Solution 3
Solution 1
Molar absorptivity (M¹cm¹)
4.00
1.00
Concentration iron(III) thiocyanate ion.
[FeSCN²+] (M)
Solution 2
4.00
2.00
0.40000
yellow
0.00300
colorless
10.00
2.00
8.00
0.000300
red-orange
Solution 3
4.00
3.00
Absorbance
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