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Questions about pH

  1. Jun 13, 2013 #1
    Hello, I've measured the pH of a med containing sodium citrate, potassium citrate and citric acid, why was is slightly acid if sodium citrate is basic ?
    How can I measure the pH of a non acquous solution using litmus paper ?
    Does some compund is, for example, basic when solid and became acid when put in water ?

    thanks
     
  2. jcsd
  3. Jun 13, 2013 #2

    Borek

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    Staff: Mentor

    If it contains citric acid, it can be acidic.

    Technically you can't - pH is a property of aqueous solution.

    Generally speaking solid is usually neither basic nor acidic - it becomes basic or acidic when it dissolves/reacts with water.
     
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