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Which indicator is commonly used in acid-base titrations?

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Question: Which indicator is commonly used in acid-base titrations?

Options:

  1. Phenolphthalein
  2. Bromothymol blue
  3. Methyl orange
  4. All of the above

Correct Answer: All of the above

Solution: 

Phenolphthalein, Bromothymol blue, and Methyl orange are all indicators that can be used in acid-base titrations, depending on the pH range of the titration.

Which indicator is commonly used in acid-base titrations?

Practice Questions

Q1
Which indicator is commonly used in acid-base titrations?
  1. Phenolphthalein
  2. Bromothymol blue
  3. Methyl orange
  4. All of the above

Questions & Step-by-Step Solutions

Which indicator is commonly used in acid-base titrations?
  • Step 1: Understand what an acid-base titration is. It is a method used to determine the concentration of an acid or a base by reacting it with a base or an acid of known concentration.
  • Step 2: Learn about indicators. Indicators are substances that change color at a certain pH level, helping to show when the reaction is complete.
  • Step 3: Identify common indicators used in acid-base titrations. The most common ones are Phenolphthalein, Bromothymol blue, and Methyl orange.
  • Step 4: Know when to use each indicator. Phenolphthalein is used for strong acid-strong base titrations, Bromothymol blue is used for neutral pH ranges, and Methyl orange is used for strong acid-weak base titrations.
  • Step 5: Remember that the choice of indicator depends on the pH range of the titration.
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