What is the purpose of a back titration?
Correct Answer: Back titration is used to determine the concentration of a reactant indirectly.
- Step 1: Understand that back titration is a method used when you cannot directly titrate a reactant.
- Step 2: Add an excess amount of a known solution (called the titrant) to the reactant you want to measure.
- Step 3: Allow the reaction to complete, so the titrant reacts with the reactant.
- Step 4: After the reaction, some of the titrant will be left over because you added more than needed.
- Step 5: Titrate the leftover titrant with another solution to find out how much titrant is left.
- Step 6: Use the amount of leftover titrant to calculate how much of the original reactant was present.
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