Blueberry Juice: A pH Indicator


In order to start our scientific investigation on household materials, we'll need to make a pH indicator using simple and attainable materials. In labs, methyl orange is often used as reliable pH indicator. Here, we will make a homemade substitute that works.



Materials

  • 200ml of Water
  • 10 Blueberries
  • Cup/Container
  • Filter (not shown in photo)
  • Pot & Stove
  • Bowl
  • Mashing/Grinding Utensil 

Step 1: Mash 10 blueberries in the bowl



Step 2: Add mashed blueberry contents into a pot
Step 3: Add 200ml of water into the pot
Step 4: Boil the water and blueberry mixture
Step 5: Filter the blueberry skin from the solution by pouring the solution into a cup9or a container) with a filter on top.


With the blueberry juice as an indicator, here is a picture to help us better estimate the pH of a substance based on the colour the blueberry indicator gives off.




For better clarification, watch our video down below in the widget, or click here.

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