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What is the purpose of a back titration?

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Question: What is the purpose of a back titration?

Options:

  1. To determine the concentration of a reactant indirectly
  2. To measure the temperature of a solution
  3. To identify the solubility of a compound
  4. To calculate the pH of a solution

Correct Answer: To determine the concentration of a reactant indirectly

Solution:

Back titration is used to determine the concentration of a reactant indirectly by reacting it with an excess of titrant and then titrating the excess.

What is the purpose of a back titration?

Practice Questions

Q1
What is the purpose of a back titration?
  1. To determine the concentration of a reactant indirectly
  2. To measure the temperature of a solution
  3. To identify the solubility of a compound
  4. To calculate the pH of a solution

Questions & Step-by-Step Solutions

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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