Which technique is used to determine the concentration of an unknown solution?

1. A titration is a technique for determining the concentration of an unknown solution. 2. The unknown solution is titrated against a standard solution of known concentration. 3. Acid-base reactions and redox reactions are both commonly used for titrations. 4. Filtration separates a solid from a liquid and tells you nothing about concentration. _Source: Siyavula Physical Sciences Grade 11 (Everything Science, CC BY 4.0), Chapter 8: Quantitative aspects of chemical change_