Hibiscus Indicator



How to Make an Indicator Using Hibiscus Petals

Steps

  1. Cut approximately 10 mature hibiscus flowers.
  2. Remove the stigma, and detach the leaves, so as to have only the red petals remaining.
  3. Put them in a container, and pour approximately 6ml of ethanol or surgical spirit; the latter works best.
  4. Crush the petals using an appropriate implement, such as a mortar and pestle.Crush until all of the liquid has been extracted from the petals.
  5. Filter the solution, and you have the reddish indicator ready.
  6. View results in sunlight if possible.Check for these results:
    • Acid--> towards highlighter red,
    • Base--> towards dark green (almost black).

Community Q&A

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  • Question
    How do I make an indicator using a local flower?
    wikiHow Contributor
    Community Answer
    The same basic way. Any brightly colored part of a plant can be used as an indicator.
    Thanks!
  • Question
    What type of natural base can I use to test for alkalinity?
    wikiHow Contributor
    Community Answer
    Ammonia water, sold in 1/2-gallon jugs in the grocery store, is basic and will correctly test the indicator.
    Thanks!
  • Question
    Which property of hibiscus enables it to act as a pH indicator?
    wikiHow Contributor
    Community Answer
    Hibiscus contains anthocyanin. This is a substance that determines a plant's color, i.e. red, pink, violet, etc.
    Thanks!
  • Question
    How long does it take to make an indicator using hibiscus flowers?
    wikiHow Contributor
    Community Answer
    Depending on your speed, it should take less than half an hour.
    Thanks!
  • Question
    What is an indicator when referring to using hibiscus petals?
    wikiHow Contributor
    Community Answer
    An indicator tells you whether the substance is an acid or base.
    Thanks!
  • Question
    After the juice is ready, what will happen if we add lemon juice to it?
    wikiHow Contributor
    Community Answer
    It will turn magenta (dark pink) or highlighter red, as mentioned above.
    Thanks!
Unanswered Questions
  • Who invented or created this study? I really need it for my report. Thanks
  • How this China rose indicator prepared?
  • How can you prepare a China rose indicator?
  • Can we use other products other than ethay/surgical sprit?
  • What is the colour change of the indicator in NaOH and HCL?
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Video: ✔How to Make Acid-Base Indicator | pH Paper At Home | Can a Flower do this?????

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Date: 14.12.2018, 11:55 / Views: 73135