Titrations Day 4

Question 1

What is Titration?

Answer 1

A titration is a reaction between an acid and a base to form salt and water.

Question 2

What is equivalent point?

Answer 2

A equivalence point is reached when all the hydrogen ions from one solution have reacted with an equal number of hydroxyl ions from the other solution.

Question 3

What are the uses of Titration?

Answer 3

Chemists use titrations to get precise volume measurements.
Pharmacists use titrations to make specific measurements when developing medications.
In the wine and cheese industry, titrations are used to test whether a product is ready for market.
Titrations are also used to test waste - water to determine the level of contamination and the best way to filter and clean it.
Biodiesel is a renewable fuel made from vegetable oil. Titrations are used to determine how acidic the vegetable oil is, so that the correct amount of base can be added to help neutralize the pH and make the biodiesel.

Question 4

What is used in Titration?

Answer 4

Burette → holds the titrant, solution of known concentration.
Pipette → holds solution whose concentration is unknown.
Titrant -> solution
Tap of burette → allows person to control the amount of titrant added to the solution in the flask.
Erlenmeyer flask → holds solution of unknown concentration but known volume.
Indicator → substance that changes colour at end point of the reaction.

Question 5

What are the steps to carry out a titration?

Answer 5

1. Rinse burette with water and then with solution.
2. Fill burette upto the 0 mark.
3. Rinse pipette with water and solution.
4. Pipette out the amount needed in a conical flask, getting the last drop out.
5. Add 2 or 3 drops of the indicator to the flask.
6. Titrate against the acid in the burette till colour change is permanent.
7. Note the reading in the burette.
8. Repeat 3 times.