Which indicator is commonly used in a titration involving hydrochloric acid and

₹0.0

Question: Which indicator is commonly used in a titration involving hydrochloric acid and sodium hydroxide?

Options:

Correct Answer: Phenolphthalein

Solution:

Phenolphthalein is commonly used as an indicator in strong acid-strong base titrations because it changes color around pH 7-10.

Which indicator is commonly used in a titration involving hydrochloric acid and sodium hydroxide?

Which indicator is commonly used in a titration involving hydrochloric acid and sodium hydroxide?

Step 1: Understand what a titration is. A titration is a method used to determine the concentration of a solution by adding a reactant of known concentration.
Step 2: Identify the substances involved in the titration. In this case, we have hydrochloric acid (HCl) and sodium hydroxide (NaOH).
Step 3: Know that hydrochloric acid is a strong acid and sodium hydroxide is a strong base.
Step 4: Learn about indicators. Indicators are substances that change color at a certain pH level, helping to show when the reaction is complete.
Step 5: Find out which indicator is suitable for strong acid-strong base titrations. Phenolphthalein is commonly used.
Step 6: Remember that phenolphthalein changes color in the pH range of 7 to 10, which is ideal for this type of titration.

No concepts available.