Which indicator is commonly used in strong acid-strong base titrations?

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

Options:

Correct Answer: Phenolphthalein

Solution:

Phenolphthalein is commonly used in strong acid-strong base titrations because it changes color at a pH around 8.2 to 10.

Which indicator is commonly used in strong acid-strong base titrations?

Which indicator is commonly used in strong acid-strong base titrations?

Step 1: Understand what a titration is. It is a method used to determine the concentration of a solution by adding a solution of known concentration.
Step 2: Identify the types of solutions involved. In this case, we are dealing with a strong acid and a strong base.
Step 3: Know that an indicator is a substance that changes color at a certain pH level, helping to show when the reaction is complete.
Step 4: Learn about phenolphthalein, which is a common indicator used in these titrations.
Step 5: Remember that phenolphthalein changes color in the pH range of 8.2 to 10, which is suitable for strong acid-strong base titrations.

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