Based on the results of your experiment, do you have hard or soft water? Does this match the data for your area? Briefly explain your answer.
|
|
Hard Water Trial 1 |
Hard Water Trial 2 |
Hard Water Trial 3 |
|
Initial Syringe Reading |
1.0ml |
1.0ml |
1.0ml |
|
Final Syringe Reading |
0.88ml |
0.84ml |
0.85ml |
|
Volume of EDTA Consumed |
0.12ml |
0.16ml |
0.15ml |
|
Water Hardness ppm CaCO3 |
24.024ppmCaCO3 |
32.032 ppmCaCO3 |
30.03 ppmCaCO3 |
|
Average ppm
|
28.70 ppmCaCO3
|
|
|
Tap Water Trial 1 |
Tap Water Trial 2 |
Tap Water Trial 3 |
|
Initial Syringe Reading |
1.0ml |
1.0ml |
1.0ml |
|
Final Syringe Reading |
0.65ml |
0.68ml |
0.67ml |
|
Volume of EDTA Consumed |
0.35ml |
0.32ml |
0.33ml |
|
Water Hardness ppm CaCO3 |
70.07 ppmCaCO3 |
64.064 ppmCaCO3 |
66.066 ppmCaCO3 |
|
Average ppm
|
66.73 ppmCaCO3 |
|
|
Soft Water Trial 1 |
Soft Water Trial 2 |
Soft Water Trial 3 |
|
Initial Syringe Reading |
1.0ml |
1.0ml |
1.0ml |
|
Final Syringe Reading |
0.97ml |
0.95ml |
0.91ml |
|
Volume of EDTA Consumed |
0.03ml |
0.05ml |
0.09ml |
|
Water Hardness ppm CaCO3 |
6.006 ppmCaCO3 |
10.01 ppmCaCO3 |
18.018 ppmCaCO3 |
|
Average ppm
|
11.37 ppmCaCO3
|
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