acid - base indicator in a sentence

"acid - base indicator" in Chinese  
  1. :Red cabbage juice makes a good acid-base indicator.
  2. As an acid-base indicator, it changes color from yellow to red between pH 12 and pH 13.
  3. However, many different acid-base indicators can be used in an HCl titration, at least a couple dozen kinds.
  4. An acid-base indicator such as bromophenol blue is added to make visible the boundary between the acidic HCl solution and the near-neutral CdCl 2 solution.
  5. :Lots of colored foods are actually decent acid-base indicators, for example red cabbage and tumeric are two classic examples I can think of, but there are likely others.
  6. It's difficult to find acid - base indicator in a sentence.
  7. Conversely, if you " know " the end product is neutral ( because you put some acid-base indicator in it and it changed color ) and you know how many moles of acid you put in, then you can calculate how many moles of base there must've been to begin with .  talk ) 00 : 01, 4 May 2007 ( UTC)

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