Kinds Of Polymers Found In Diapers

Polymers and pH Indicators lab discussion paragraph

Instructions:

One page (12 font, single spaced)

Answer ALL the 12 questions in A SINGLE PARAGRAPH

The polymer used in this lab was a superabsorbent polymer called sodium polyacrylate

  1. (Existing knowledge, research and views) Define polymers and identify what kind of polymers are found in diapers(sodium polyacrylate).
  2. (Analysis) Describe what happened when you add water to a polymer and use your observation to explain how a diaper works.
  3. (Existing knowledge, research and views) Look up the water uptake of this particular super absorbent polymer(sodium polyacrylate). Describe how your result compares to that number.
  4. (Experiment design) Name at least 3 other applications for these super absorbent polymers( the sodium polyacrylate) and describe how they are used. What about these applications make them interesting to you?
  5. (Assumptions and limitations) Describe what happened when you add salt to the sodium polyacrylate polymer. What other substances do you expect to produce the same effect? Propose an experiment to test the response of the polymer to at least another substance and provide an argument why you would expect similar results.
  6. (Existing knowledge, research and views) Define pH and describe what it is used for.
  7. (Existing knowledge, research and views) Describe the pH indicator used in this experiment and how it was prepared. If the indicator wasn’t the whole red cabbage, identify the specific compound.

The ph indicator used was red cabbage. Here a link to help you understand https://www.stevespanglerscience.com/lab/experiments/red-cabbage-chemistry/

  1. (Analysis) Classify the substances you tested in your pH experiment as acidic, basic or neutral, and evaluate your results. Did all your expected acids have the same color? What about your bases and neutral substances?
  2. (Assumptions) Predict the color of the indicator and the pH of the solution if a strong acid like HCl is used in place of the vinegar. Explain it.
  3. (Assumptions) Predict the color of the indicator and the pH of the solution if a strong base like NaOH is used instead of sodium carbonate. Explain it.
  4. (Assumptions) Predict the color of the indicator and the pH of the solution if a higher concentration of the acetic acid was used instead of the 5% vinegar. Explain it.
  5. (Assumptions and limitations) Describe a practical application that requires you to determine the pH and explain why the red-cabbage indicator may or may not work for that purpose.

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