Experiment #1 - Total Colour Determination

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8 Terms

1
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Why is the color of drinking water important?

  • Consumers desire colorless water

  • Color suggests the presence of metallic ions or organic matter

  • The color is usually amber

2
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Transmittance

The measure of how much light passes through a substance

3
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Absorbance

The measure of how much light is absorbed by a substance

4
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Apparent color

The color of drinking water before filtering

5
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True color

The color of drinking water after filtering with a 0.45 gridless micron filter

6
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How did we quantify the color?

  • Comparing with a platinum cobalt chloride (CoCl2) solution

  • Measuring with a spectrophotometer

7
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What was the concentration of stock solution?

500 CU

8
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Absorbance formula

2-logT%