To analyze a sample that is difficult to titrate directly
To measure the pH of a solution
To separate components in a mixture
Questions & Step-by-Step Solutions
What is the role of a back titration?
Step 1: Understand that back titration is a method used when direct titration is hard to perform.
Step 2: Start by adding an excess amount of a known solution (called the titrant) to the sample you want to analyze.
Step 3: Allow the titrant to react with the sample completely.
Step 4: After the reaction, some of the titrant will be left unreacted because there was more titrant added than needed.
Step 5: Now, you need to find out how much of the titrant is left. To do this, you perform a second titration using another solution that will react with the leftover titrant.
Step 6: By measuring how much of the second solution you used, you can calculate how much titrant reacted with the sample.
Step 7: This information helps you determine the amount of the substance in your original sample.
