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PH Values of Water Completely Explained

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Remember the time in 4th grade science class when you did that experiment with litmus paper and it turned red when you put it on a lemon and blue in soapy water? That was probably your first experiment into the wondrous science of pH.

pH value is known as the indicator for acidity, alkalinity, or neutral. A pH value of 7 means a substance is neutral (or basic). The lower value indicates acidity, and a higher value is a sign of alkalinity. By definition, pH is a measure of the relative amount of free hydrogen and hydroxyl ions in the water. But to better understand the range in pH, take a look at these examples:

  • Apple Juice - 3
  • Orange Juice - 3.5
  • Coffee - 5.5
  • Milk - 6.2
  • Baking Soda - 8.5
  • Soapy water - 10
  • Bleach - 12

In addition, many of the foods we eat contain an acidic pH because of their bacteria killing functions.

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