Tuesday, June 23, 2015

Which of the following is an acid-base indicator?

Question: Which of the following is an acid-base indicator?
  1. hydrochloric acid 
  2. sodium hydroxide 
  3. water 
  4. phenolphthalein
Answer: Phenolphthalein is an acid-base indicator
  1. Hydrochloric acid is an acid
  2. Sodium Hydroxide is a base
  3. Water is neutral

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