Titrations

What are titrations, why are they useful, and how do we do the calculations associated with these? Prof Al does his best to shed light on these questions.
The worked problems
1) Titration of 20.00 mL of an HCl solution of unknown concentration required 18.46 mL of a 0.150 mol L-1 solution of NaOH. Determine the concentration of the HCl solution.
2) A tablet of Aspirin (a weak acid) was dissolved in water and analysed by titration with NaOH. It was found that 15.14 mL of a 0.150 mol L-1 solution of NaOH was required to reach the endpoint of the titration. What is the mass % of aspirin in the tablet?
Watch the other episodes of this series: • Chemistry Matters
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[@andrewjustin256]

Profell, you have been fantastic and descriptive throughout the lesson. I also watched your other lesson in which you experimentally performed the titration. I would like to extend my gratitude!!