6 ml of water used (5 ml of tap water 1ml of buffer) Hard Water Trial 1 Hard Water Trial 2 Hard Water Trial 3 Initial Syringe Reading (mL) 2ml 2ml 2ml Final Syringe Reading (mL) .61ml .69ml .58ml Volume of EDTA Consumed (mL) 139ml 131ml 142ml Water Hardness ppm CaCO3 (mg/L) Average ppm CaCO3 (mg/L)
6 ml of water used (5 ml of tap water 1ml of buffer) Hard Water Trial 1 Hard Water Trial 2 Hard Water Trial 3 Initial Syringe Reading (mL) 2ml 2ml 2ml Final Syringe Reading (mL) .61ml .69ml .58ml Volume of EDTA Consumed (mL) 139ml 131ml 142ml Water Hardness ppm CaCO3 (mg/L) Average ppm CaCO3 (mg/L)
Chemistry for Today: General, Organic, and Biochemistry
9th Edition
ISBN:9781305960060
Author:Spencer L. Seager, Michael R. Slabaugh, Maren S. Hansen
Publisher:Spencer L. Seager, Michael R. Slabaugh, Maren S. Hansen
Chapter1: Matter, Measurements, And Calculations
Section: Chapter Questions
Problem 1.135E
Related questions
Question
Data Table 2: Complexometric Titration of Tap Water
photo shows equation to find water hardness
6 ml of water used (5 ml of tap water 1ml of buffer)
|
Hard Water Trial 1 |
Hard Water Trial 2 |
Hard Water Trial 3 |
Initial Syringe Reading (mL) |
2ml |
2ml |
2ml |
Final Syringe Reading (mL) |
.61ml |
.69ml |
.58ml |
Volume of EDTA Consumed (mL) |
139ml |
131ml |
142ml |
Water Hardness ppm CaCO3 (mg/L) |
|
|
|
Average ppm CaCO3 (mg/L):
![mL EDTA
1 L
0.01 mol EDTA
1 mol CaCO,
mol CaCO,
%3D
1
1,000 mL
1 L
1 mol EDTA
1,000 mg
100.1 g CaCO,
1 mol CaCO,
1,000 mL
mol CaCO,
mL Water Sample
mg/L CaCO,
%3D
1 g
1 L
mg/L CaCO,=_ppm CaCO,
continued on next](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F5185962d-e7eb-49eb-b02e-41dab686fbb2%2F15c2ca07-a668-4570-b867-dedbaac33f81%2Fdzuf6gs_processed.jpeg&w=3840&q=75)
Transcribed Image Text:mL EDTA
1 L
0.01 mol EDTA
1 mol CaCO,
mol CaCO,
%3D
1
1,000 mL
1 L
1 mol EDTA
1,000 mg
100.1 g CaCO,
1 mol CaCO,
1,000 mL
mol CaCO,
mL Water Sample
mg/L CaCO,
%3D
1 g
1 L
mg/L CaCO,=_ppm CaCO,
continued on next
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