What indicator is commonly used in a strong acid-strong base titration?
Practice Questions
Q1
What indicator is commonly used in a strong acid-strong base titration?
Phenolphthalein
Methyl orange
Bromothymol blue
Litmus
Questions & Step-by-Step Solutions
What indicator is commonly used in a strong acid-strong base titration?
Step 1: Understand what a titration is. A titration 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 a strong acid-strong base titration, you have a strong acid (like hydrochloric acid) and a strong base (like sodium hydroxide).
Step 3: Learn about indicators. An indicator is a substance that changes color to show whether a solution is acidic or basic.
Step 4: Know the pH range for neutral solutions. A neutral solution has a pH of around 7.
Step 5: Find out which indicator is suitable. Phenolphthalein is commonly used because it changes color at a pH around 8.2 to 10, which is close to neutral.
Step 6: Conclude that phenolphthalein is the indicator used in strong acid-strong base titrations due to its clear color change at neutral pH.
