Which indicator is commonly used in a titration involving hydrochloric acid and sodium hydroxide?
Practice Questions
1 question
Q1
Which indicator is commonly used in a titration involving hydrochloric acid and sodium hydroxide?
Phenolphthalein
Methyl orange
Bromothymol blue
Litmus
Phenolphthalein is commonly used as an indicator in strong acid-strong base titrations because it changes color around pH 7-10.
Questions & Step-by-step Solutions
1 item
Q
Q: Which indicator is commonly used in a titration involving hydrochloric acid and sodium hydroxide?
Solution: Phenolphthalein is commonly used as an indicator in strong acid-strong base titrations because it changes color around pH 7-10.
Steps: 6
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.
