Bleach Lab

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Bleach Lab

• Idea

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Reaction

• NaClO(aq) C37H34N2Na2O9S3 ?

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Absorbance and Concentration

• Absorbance is directly proportional to
  concentration in the dye.
• As the dye is consumed the absorbance decreases

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Effect of changing bleach concentration

• When the bleach concentration was doubled, the
  change in absorbance over time doubled
• Changing the bleach concentration causes a
  proportional change in the absorbance change over
  time.

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Effect of changing bleach concentration

• When the bleach concentration was halved, the
  change in absorbance over time was halved
• Changing the bleach concentration causes a
  proportional change in the absorbance change over
  time.

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Effect of Temperature

• At an increased temperature the change in
  absorbance over time is greater

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Effect of HCl

• The presence of HCl caused the change in
  absorbance over time to increase